Certifications & Test Reports

Product Certification

SXC-SK01-C8A1 · SXC-SK01-C8A8 · SXC-SK01-C8A9

CE Certificate (LVD + EMC) — SXC-SK01-C8A Series Pulse Controller

Verification of LVD and EMC compliance for the XIECHANG SXC-SK01-C8A1/C8A8/C8A9 pulse computer controllers under EU Directives 2014/35/EU and 2014/30/EU, permitting CE marking. Valid to 2030-09-17.

Full test reports TEJS25091275735, TLJS25091275734 available on request.

Product Certification

DCF-TZ · DCF-TZ-XQA · DCF-TZ-XQB

CE Statement of Compliance (EMC) — DCF-TZ Solenoid Coil (UL-CCIC)

UL-CCIC verification of EMC compliance under EU Directive 2014/30/EU for the DCF-TZ electromagnetic coil family used on pulse jet valves, supporting CE marking based on test report 4790933465-2.

Full test report 4790933465-2 available on request.

Product Certification

SXC-8A · SXC-X8A1 · SXC-X8A4 · SXC-X8A6 · SXC-X8A7

CE Statement of Compliance (EMC) — SXC-8A / SXC-X8A Series Pulse Controller (UL-CCIC)

UL-CCIC verification of EMC compliance under EU Directive 2014/30/EU for the SXC-8A pulse computer controller family, supporting CE marking based on test report 4790933465-1.

Full test report 4790933465-1 available on request.

Product Certification

DCF-F T4 AC 230V · DCF-F-Z/Y/ZM-20 · DCF-F-Z/Y/T/ZM-25 · DCF-Z/Y/T/ZM-40S · DCF-F-Z/Y/T-50S · DCF-F-Z/Y-62S · DCF-F-Z/Y-76S · DCF-F-Z/Y-102S.B · DCF-F-Z/Y-102S · DCF-F-Y-115S

CE Statement of Compliance — DCF-F Solenoid Coil (T4, AC 230V)

UL-CCIC Statement of Compliance confirming the DCF-F series solenoid coil (T4, AC 230V) meets EN IEC 61000-6-2:2019 and EN IEC 61000-6-4:2019 under EMC Directive 2014/30/EU, permitting CE marking; based on test report 4791247699-4.

Full test report 4791247699-4 available on request.

Product Certification

DCF-F T4 DC 24V · DCF-F-Z/Y/ZM-20 · DCF-F-Z/Y/T/ZM-25 · DCF-Z/Y/T/ZM-40S · DCF-F-Z/Y/T-50S · DCF-F-Z/Y-62S · DCF-F-Z/Y-76S · DCF-F-Z/Y-102S.B · DCF-F-Z/Y-102S · DCF-F-Y-115S

CE Statement of Compliance — DCF-F Solenoid Coil (T4, DC 24V)

UL-CCIC Statement of Compliance confirming the DCF-F series solenoid coil (T4, DC 24V) meets EN IEC 61000-6-2:2019 and EN IEC 61000-6-4:2019 under EMC Directive 2014/30/EU, permitting CE marking; based on test report 4791247699-1.

Full test report 4791247699-1 available on request.

Product Certification

DCF-F T6 AC 230V · DCF-F-Z/Y/ZM-20 · DCF-F-Z/Y/T/ZM-25 · DCF-Z/Y/T/ZM-40S · DCF-F-Z/Y/T-50S · DCF-F-Z/Y-62S · DCF-F-Z/Y-76S · DCF-F-Z/Y-102S.B · DCF-F-Z/Y-102S · DCF-F-Y-115S

CE Statement of Compliance — DCF-F Solenoid Coil (T6, AC 230V)

UL-CCIC Statement of Compliance confirming the DCF-F series solenoid coil (T6, AC 230V) meets EN IEC 61000-6-2:2019 and EN IEC 61000-6-4:2019 under EMC Directive 2014/30/EU, permitting CE marking; based on test report 4791247699-3.

Full test report 4791247699-3 available on request.

Product Certification

DCF-F T6 DC 24V · DCF-F-Z/Y/ZM-20 · DCF-F-Z/Y/T/ZM-25 · DCF-Z/Y/T/ZM-40S · DCF-F-Z/Y/T-50S · DCF-F-Z/Y-62S · DCF-F-Z/Y-76S · DCF-F-Z/Y-102S.B · DCF-F-Z/Y-102S · DCF-F-Y-115S

CE Statement of Compliance — DCF-F Solenoid Coil (T6, DC 24V)

UL-CCIC Statement of Compliance confirming the DCF-F series solenoid coil (T6, DC 24V) meets EN IEC 61000-6-2:2019 and EN IEC 61000-6-4:2019 under EMC Directive 2014/30/EU, permitting CE marking; based on test report 4791247699-2.

Full test report 4791247699-2 available on request.

Product Certification

SXC-JK01-C8B2

CE Verification of EMC Compliance — SXC-JK01-C8B2 Pulse Controller

Verification of EMC Compliance under Directive 2014/30/EU for the XIECHANG SXC-JK01-C8B2 pulse computer controller, confirming conformity with EN IEC 61000-6-2/-6-4 and EN IEC 61000-3-2/-3-3; valid 2025-03-10 to 2030-03-09, supporting CE marking.

Full test report TEJS25020766655 available on request.

Product Certification

SXC-SK01-C8A1 · SXC-SK01-C8A8 · SXC-SK01-C8A9 · SXC-SK01-C8A

CE Verification of EMC Compliance — SXC-SK01-C8A1/C8A8/C8A9 Pulse Controllers

Verification of EMC Compliance under Directive 2014/30/EU for the XIECHANG SXC-SK01-C8A1, C8A8 and C8A9 pulse computer controllers, confirming conformity with EN IEC 61000-6-2/-6-4 and EN IEC 61000-3-2/-3-3; valid 2025-03-10 to 2030-03-09, supporting CE marking.

Full test report TEJS25020766656 available on request.

Product Certification

DCF-Z-25-E · DCF-Z/Y/ZM-20 · DCF-Z/Y/T/ZM-25 · DCF-Z/Y/T/ZM-40S · DCF-Z/Y/T-50S · DCF-Z/Y-62S · DCF-Z/Y-76S · DCF-Z/Y-102S.B · DCF-Z/Y-102S · DCF-Y-115S · DCF-Z/Y/ZM-20-E · DCF-Z/Y/T/ZM-25-E · DCF-Z/Y/T/ZM-40S-E · DCF-Z/Y/T-50S-E · DCF-Z/Y-62S-E · DCF-Z/Y-76S-E · DCF-Z/Y-102S.B-E · DCF-Z/Y-102S-E · DCF-Y-115S-E

SGS CE Verification of Compliance (EMC) — DCF Series Pulse Valves

SGS verification of EMC compliance under EU Directive 2014/30/EU for the DCF-Z/Y/T/ZM series electromagnetic pulse valves, supporting CE marking based on SGS test report SHEM250300138601.

Full test report SHEM250300138601 available on request.

Product Certification

SXC-JK01-C8B2

TUV SUD Attestation of Conformity — SXC-JK01-C8B2 Pulse Jet Controller (EMC Directive)

TUV SUD Attestation of Conformity (No. E8A 138237 0001) confirming the SXC-JK01-C8B2 pulse jet electronic controller (input 230V AC / DC 24V, output DC 24V 1.5A) complies with the EMC Directive 2014/30/EU per EN IEC 61326-1:2021, EN IEC 61000-6-2:2019 and EN IEC 61000-6-4:2019; based on test report 4899926015500.

Full test report 4899926015500 available on request.

Product Certification

WPS-TZ-XQ (suffix A, B, C, D or E)

UL Certificate of Compliance — Recognized Component, Coil Assembly for Electrically Operated Valves

UL Certificate of Compliance under UL's Component Recognition Program (not a full UL Listing) covering coil assemblies, model WPS-TZ-XQ A-E, as components of electrically operated valve parts, investigated to UL 429 and CAN/CSA C22.2 No. 139-10. Note the certificate is issued to WATSON PROCESS SYSTEMS of Mississauga, Canada — a customer/brand holder — not to Suzhou XieChang, so it should not be presented as a UL certificate held in XieChang's own name. Certificate held by Watson Process Systems (Canada); Xiechang is Watson’s Asia-Pacific agent and presents this as an agency-line credential, not its own certification.

Product Certification

DCF-F Series · DCF-F Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-F-II-80

CCC Certificate — DCF-F Series Explosion-Proof Pulse Valve

English-language edition of CCC certificate 2024322307005851 for the DCF-F series explosion-proof electromagnetic pulse valve, certified to GB/T 3836.1-2021 and GB/T 3836.9-2021 under CNCA-C23-01:2024. First issued 2024-03-19.

Issued as Chinese/English twin certificates.

Product Certification

DCF-Fa Series · DCF-Fa series · DCF-Fa Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-Fa-II-80

CCC Certificate — DCF-Fa Series Explosion-Proof Pulse Valve

China Compulsory Certification (CCC) for the DCF-Fa series explosion-proof electromagnetic pulse valve, certified to GB/T 3836.1-2021 and GB/T 3836.9-2021 under the CNCA-C23-01:2024 rules for explosion-protected electrical equipment. English-language edition of the certificate.

Issued as Chinese/English twin certificates.

Product Certification

SXC-FB 220VAC 300mA

CCC Certificate — SXC-FB Explosion-Proof Pulse Controller

English-language edition of CCC certificate 2023322304005409 for the SXC-FB explosion-proof computer pulse controller, certified to GB/T 3836.1/3836.2/3836.31-2021 under CNCA-C23-01:2024. First issued 2023-07-31.

Issued as Chinese/English twin certificates.

Product Certification

SXC-X8A4-a 220VAC · SXC-X8A4-a 220VAC (a = 1-40 output circuits)

CCC Certificate — SXC-X8A4-a Online Pulse Controller

English-language edition of CCC certificate 2023322304005408 for the SXC-X8A4-a online pulse controller, certified to GB/T 3836.1-2021 and GB/T 3836.31-2021 under CNCA-C23-01:2024. First issued 2023-07-31.

Issued as Chinese/English twin certificates.

Product Certification

DCF-F2 series · DCF-F2 series (Z/Y/T/ZM/2L-B variants, 20-115S sizes) · DMY-F2-II-80

CCC Ex Certificate — DCF-F2 Series Explosion-Proof Pulse Valves

English edition of the China Compulsory Certification (CCC) certificate for the DCF-F2 series explosion-proof electromagnetic pulse valves, certified to GB/T 3836.1/3836.2/3836.31-2021. Valid to 2029-08-19; verifiable on www.cnca.gov.cn.

Issued as Chinese/English twin certificates.

Product Certification

DCF-F3 series · DCF-F3 series (Z/Y/T/ZM/2L-B variants, 20-115S sizes) · DMY-F3-II-80

CCC Ex Certificate — DCF-F3 Series Explosion-Proof Pulse Valves

English edition of the China Compulsory Certification (CCC) certificate for the DCF-F3 series explosion-proof electromagnetic pulse valves, certified to GB/T 3836.1/3836.2/3836.9/3836.31-2021. Valid to 2029-09-04; verifiable on www.cnca.gov.cn.

Issued as Chinese/English twin certificates.

Product Certification

DCF-F3 Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-F3-II-80

Ex Certificate GYB25.1973X — DCF-F3 Series Explosion-Proof Pulse Valve

NEPSI explosion-protection conformity certificate for the DCF-F3 series explosion-proof electromagnetic pulse valve, Ex marking Ex db mb IIC T4 Gb / Ex tb mb IIIC T130°C Db, enclosure IP66, ambient -20°C to +60°C, AC220V/110V and DC24V/12V. Includes attachment with the full approved model list and conditions of safe use.

Product Certification

DCF-F Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-F-II-80

Ex Certificate GYB25.1974X — DCF-F Series Encapsulated Pulse Valve

NEPSI explosion-protection conformity certificate for the DCF-F series explosion-proof electromagnetic pulse valve, Ex marking Ex mb IIC T4/T6 Gb, Ex mb IIIC T130°C/T80°C Db; IP65 (T4, -20°C to +40°C) or IP67 (T6, -40°C to +60°C), DC24V/AC220V. Includes attachment with the full approved model list and conditions of safe use.

Product Certification

DCF-F2 Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-F2-II-80

Ex Certificate GYB25.1975X — DCF-F2 Series Flameproof Pulse Valve

NEPSI explosion-protection conformity certificate for the DCF-F2 series explosion-proof electromagnetic pulse valve, Ex marking Ex db IIC T6 Gb, Ex tb IIIC T80°C Db, enclosure IP67, ambient -40°C to +60°C, DC24V/AC220V. Includes attachment listing all approved models and conditions of safe use.

Product Certification

SXC-X8A4-a 220VAC (a = 1-40 output circuits)

Ex Certificate GYB25.1976 — SXC-X8A4-a Online Pulse Controller

NEPSI explosion-protection conformity certificate for the SXC-X8A4-a online pulse controller (220VAC, 1-40 output circuits), Ex marking Ex tb IIIC T80°C Db (dust-ignition protection by enclosure), IP65.

Product Certification

SXC-FB 220VAC 300mA

Ex Certificate GYB25.1977X — SXC-FB Explosion-Proof Pulse Controller

NEPSI explosion-protection conformity certificate for the SXC-FB explosion-proof computer pulse controller (220VAC 300mA), Ex marking Ex db IIB T6 Gb / Ex tb IIIC T80°C Db, enclosure IP65. Flameproof-joint repairs are restricted to the manufacturer; fasteners grade A2-70.

Product Certification

DCF-Fa Series (2L-B / Z / Y / YA / YQ / ZM / T variants) · DMY-Fa-II-80

Ex Certificate GYB25.3204X — DCF-Fa Series Encapsulated Pulse Valve

NEPSI explosion-protection conformity certificate for the DCF-Fa series explosion-proof electromagnetic pulse valve, Ex marking Ex mb IIC T4 Gb, Ex mb IIIC T130°C Db (encapsulation 'm' protection), enclosure IP65, ambient -20°C to +40°C, 24VDC/220VAC. Includes attachment with the full approved model list and conditions of safe use.

Product Certification

WPS-F series (WPS-F-CA/TG20–TG76, TD20–TD40, EG25–EG40, EP50–EP115, incl. -E/-F/-M variants)

Explosion-Proof Certificate of Conformity (NEPSI) — WPS-F Series Explosion-Proof Pulse Valves

Chinese national explosion-proof certificate for the WPS-F series explosion-proof solenoid pulse valves, issued by NEPSI. Ex marking: Ex mb IIC T4 Gb / Ex mb IIIC T130°C Db; enclosure rating IP65; valid 2025-07-30 to 2030-07-29. The 'X' suffix denotes special conditions of safe use (cable free end must terminate in suitably certified equipment).

Product Certification

DCF-Y-20/25/40S/50S/62S/76S/102S.B/102S/115S (incl. -JC/C/D/E) · DCF-Z-20/25/40S/50S/62S/76S/102S.B/102S/115S (incl. -JC/C/D/E) · DCF-ZM-20/25/40S (incl. -JC/C/D/E) · DCF-T-25S/40S/50S (incl. -JC/C/D/E) · DMY-II-80 (incl. -JC/C/D/E) · DCF-Y-76S/II-00 (incl. -JC/C/D/E) · DCF-YQ-76S/102S.B/102S (incl. -JC/C/D/E) · DCF-YA-76S/102S.B/102S (incl. -JC/C/D/E) · DCF-Y-20/25/40S/50S/62S/76S/102S.B/102S/115S

EAC Declaration of Conformity — Solenoid Pulse Valves (DCF / DMY Series)

EAC (Eurasian Economic Union) declaration of conformity covering serial production of Xiechang DCF-Y/Z/ZM/T, DMY-II, DCF-YQ and DCF-YA solenoid pulse valves under TR CU 010/2011 (machinery safety) and TR CU 020/2011 (EMC). Registered 2026-05-21, valid through 2031-05-20; enables sale in Russia and other EAEU countries.

Full test report ТСМ-ИЛ-2026-1153 available on request.

Test Report

DCF (DCF-Y, DCF-Z, DCF-ZM, DCF-T)

China RoHS Verification Report — DCF Solenoid Pulse Valves

SGS verification report (English version) confirming that DCF-series pulse valves pass GB/T 26572-2011 (China RoHS) restricted-substance limits for lead, mercury, cadmium, hexavalent chromium, PBBs and PBDEs.

Full test report SHAEC23020676601 available on request. Issued as Chinese/English twin certificates.

Test Report

SXC-X8A

China RoHS Verification Report — SXC-X8A Pulse Jet Controller

SGS verification report (English version) confirming that the SXC-X8A pulse controller passes GB/T 26572-2011 (China RoHS) restricted-substance limits for lead, mercury, cadmium, hexavalent chromium, PBBs and PBDEs.

Full test report SHAEC2303211602 available on request. Issued as Chinese/English twin certificates.

Product Certification

DCF series

CCEP Environmental Protection Product Certification — DCF Solenoid Pulse Valves

Chinese Certificate of Environmental Products (CCEP) certifying that DCF-type solenoid pulse valves for baghouse dust collectors meet HJ/T 284-2006. Certification mode includes factory inspection, product testing and post-certification surveillance; valid 2026-01-15 to 2029-01-14.

Test Report

DCF-00 (AC220V, 24VDC)

IP65 Ingress Protection Test Report — DCF-00 Solenoid Pulse Valve (CQST, 2020)

Commissioned ingress protection test of the DCF-00 solenoid pulse valve (AC220V and 24VDC versions) by the national test centre for explosion-protected electrical products. Dust-tightness (IP6X) and water-jet (IPX5) tests per GB/T 4208-2017 passed, supporting an IP65 enclosure rating. Bilingual Chinese/English report with CMA and CNAS accreditation marks.

Test Report

SXC-5A1-24

IP65 Ingress Protection Test Report — SXC-5A1-24 Pulse Jet Controller

Enclosure ingress-protection test report for the SXC-5A1-24 pulse jet controller per GB/T 4208-2017 (IEC 60529 equivalent). Passed IP6X (dust-tight) and IPX5 (water jets), i.e. IP65.

Test Report

SXC-5A1-8

IP65 Ingress Protection Test Report — SXC-5A1-8 Pulse Jet Controller

Enclosure ingress-protection test report for the SXC-5A1-8 pulse jet controller per GB/T 4208-2017. Passed IP6X (dust-tight) and IPX5 (water jets), i.e. IP65.

Test Report

SXC-BHK

IP65 Ingress Protection Test Report — SXC-BHK Closed-Loop Pulse Control Terminal

Enclosure ingress-protection test report for the SXC-BHK closed-loop pulse control terminal per GB/T 4208-2017. Passed IP6X (dust-tight) and IPX5 (water jets), i.e. IP65.

Test Report

SXC-C8C1

IP65 Ingress Protection Test Report — SXC-C8C1 Pulse Jet Controller

Enclosure ingress-protection test report for the SXC-C8C1 pulse jet controller per GB/T 4208-2017. Passed IP6X (dust-tight) and IPX5 (water jets), i.e. IP65.

Test Report

SXC-DXK-D

IP65 Ingress Protection Test Report — SXC-DXK-D Solenoid Pilot Controller for Pulse Valves

Commissioned enclosure protection test of the SXC-DXK-D solenoid pilot controller for pneumatically operated pulse valves. The IP65 test (IP6X dust-tightness plus IPX5 water jets) passed per GB/T 4208-2017.

Test Report

SXC-JK01-C8B2

IP65 Ingress Protection Test Report — SXC-JK01-C8B2 Pulse Jet Controller

Enclosure ingress-protection test report for the SXC-JK01-C8B2 pulse jet controller (Xiechang brand) per GB/T 4208-2017. Passed IP6X (dust-tight) and IPX5 (water jets), i.e. IP65. Issued 2025-01-16.

Test Report

SXC-SK01-C8A1

IP65 Ingress Protection Test Report — SXC-SK01-C8A1 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-SK01-C8A1 pulse jet controller. Both the IP6X dust-tightness test and the IPX5 water-jet test passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-SK01-C8A8

IP65 Ingress Protection Test Report — SXC-SK01-C8A8 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-SK01-C8A8 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-SK01-C8A9

IP65 Ingress Protection Test Report — SXC-SK01-C8A9 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-SK01-C8A9 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A1

IP65 Ingress Protection Test Report — SXC-X8A1 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-X8A1 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A1-HK

IP65 Ingress Protection Test Report — SXC-X8A1-HK Expansion Box

Commissioned enclosure protection test of the SXC-X8A1-HK expansion box (accessory for the SXC-X8A1 pulse jet controller). IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A1-LK

IP65 Ingress Protection Test Report — SXC-X8A1-LK Expansion Box

Commissioned enclosure protection test of the SXC-X8A1-LK expansion box (accessory for the SXC-X8A1 pulse jet controller). IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A4

IP65 Ingress Protection Test Report — SXC-X8A4 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-X8A4 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A6

IP65 Ingress Protection Test Report — SXC-X8A6 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-X8A6 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8A7

IP65 Ingress Protection Test Report — SXC-X8A7 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-X8A7 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

SXC-X8B2

IP65 Ingress Protection Test Report — SXC-X8B2 Pulse Jet Controller

Commissioned enclosure protection test of the SXC-X8B2 pulse jet controller. IP6X dust-tightness and IPX5 water-jet tests both passed per GB/T 4208-2017, confirming an IP65 enclosure rating.

Test Report

WF1 Anti-Corrosion Grade Test Report — Solenoid Pulse Valve (Low Temperature, SO2 Corrosion, IP54)

Commissioned WF1 outdoor anti-corrosion grade test of a solenoid pulse valve per JB/T 9536-2013: -20 C low-temperature operation, sulfur dioxide corrosion exposure (insulation resistance >2 megohm, no flashover), and IP54 ingress protection (IP5X dust and IPX4 splash) all passed with no damage or water/dust ingress.

Test Report

DCF

Material Test Report — 304 Stainless Steel Valve Body (2026)

SGS chemical composition report verifying that the stainless steel body of Xiechang DCF pulse valves matches grade 304 (18Cr-8Ni). Note: filename says valve cover, but the tested sample is printed as valve body.

Test Report

DCF

Material Test Report — 316 Stainless Steel Valve Body (2026)

SGS chemical composition report verifying that the stainless steel body of Xiechang DCF pulse valves matches grade 316, including the molybdenum content that distinguishes 316 from 304. Note: filename says valve cover, but the tested sample is printed as valve body.

Test Report

DCF

Material Test Report — Aluminum Backing Disc (2026)

SGS chemical composition analysis of the aluminum diaphragm backing disc used in Xiechang DCF-series pulse valves, confirming the declared 5052 aluminum alloy. Supersedes report SHIN2601000469ML04_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Cu/Zn Content of Assembly Screws and Washers (2026)

SGS copper/zinc content analysis of eight 316 stainless steel screws, bolts, and washers used to assemble the copper/zinc-restricted variants of Xiechang DCF-series pulse valves; all samples show negligible zinc and low copper. Supersedes report SHIN2601000469ML24_CN dated 2026-01-16.

Test Report

DCF-F2

Material Test Report — Cu/Zn Content of Explosion-Proof Coil Housing (2026)

SGS copper/zinc content analysis of the flameproof solenoid coil housing used on Xiechang DCF-F2 explosion-proof pulse valves, cast in ADC12 aluminum alloy. Supersedes report SHIN2601000469ML23_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — DN20 Diaphragm Fasteners, Cu/Zn Content (2026)

SGS chemical composition report on the 316 stainless steel screw, nut, and washer of the DN20 copper/zinc-restricted diaphragm assembly, verifying copper and zinc content for contamination-sensitive (e.g. lithium battery) applications.

Test Report

DCF

Material Test Report — DN25/DN40 Diaphragm Fasteners, Cu/Zn Content (2026)

SGS chemical composition report on the 316 stainless steel bolts, nut, and washers of the DN25 and DN40 copper/zinc-restricted diaphragm assemblies, verifying copper and zinc content for contamination-sensitive applications.

Test Report

DCF

Material Test Report — DN50 Diaphragm Fasteners, Cu/Zn Content (2026)

SGS chemical composition report on the stainless steel bolt, nut, and washer of the DN50 copper/zinc-restricted diaphragm assembly, verifying copper and zinc content for contamination-sensitive applications.

Test Report

DCF

Material Test Report — Diaphragm Backing Insert 115S (2026)

SGS chemical composition analysis of the metal insert embedded in the rubber diaphragm backing plate (115S specification) of Xiechang DCF-series pulse valves, confirming the declared 316 stainless steel grade. Supersedes report SHIN2601000469ML19_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Diaphragm Backing Insert 304 (2026)

SGS chemical composition analysis of the metal insert embedded in the rubber diaphragm backing plate of Xiechang DCF-series pulse valves, confirming the declared 304 stainless steel grade. Supersedes report SHIN2601000469ML20_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Diaphragm Rivet for Above DN40 (2026)

SGS chemical composition report on the 304 stainless steel diaphragm rivet used in DCF pulse valves larger than DN40.

Test Report

DCF

Material Test Report — Diaphragm Rivet for DN40 and Below (2026)

SGS chemical composition report on the stainless steel diaphragm rivet used in DCF pulse valves of size DN40 and below, confirming an 18Cr-8Ni austenitic stainless steel.

Test Report

DCF-II-80

Material Test Report — Main Spring, DCF-II-80 (2026)

SGS chemical composition report on the large main spring of the DCF-II-80 pulse valve, confirming SWP-B piano-wire spring steel with very low copper and zinc content.

Test Report

DCF

Material Test Report — Pilot Spring (2026)

SGS chemical composition report verifying that the pilot spring of Xiechang DCF pulse valves is made of 304 stainless steel.

Test Report

DCF

Material Test Report — Pilot Tube (2026)

SGS chemical composition report verifying that the pilot tube of Xiechang DCF pulse valves is made of 0Cr18Ni9 (304-equivalent) austenitic stainless steel.

Test Report

DCF

Material Test Report — Pulse Valve Large Spring (2026)

SGS chemical composition analysis of the large diaphragm-return spring used in Xiechang DCF-series solenoid pulse valves, confirming the declared 304 stainless steel grade. Supersedes report SHIN2601000469ML12_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Pulse Valve Retaining Ring (2026)

SGS chemical composition analysis of the retaining ring used in Xiechang DCF-series solenoid pulse valves, confirming the declared 304 stainless steel grade. Supersedes report SHIN2601000469ML17_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Rivet Flange Washer for Above DN40 (2026)

SGS chemical composition report on the 304 stainless steel flange washer of the diaphragm rivet used in DCF pulse valves larger than DN40. Note: filename says flange nut, but the tested sample is printed as flange washer.

Test Report

DCF

Material Test Report — Rivet Flange Washer for DN40 and Below (2026)

SGS chemical composition report on the 304 stainless steel flange washer of the diaphragm rivet used in DCF pulse valves of size DN40 and below.

Test Report

DCF

Material Test Report — Rubber Support Disc (2026)

SGS laboratory report confirming by FTIR analysis that the rubber support disc used in Xiechang DCF pulse valves is made of nitrile rubber (NBR). Tested January 2026 in Shanghai.

Test Report

DCF

Material Test Report — Stainless Steel Support Disc (2026)

SGS chemical composition report verifying that the stainless steel support disc used in DCF pulse valves is grade 304.

Test Report

DCF

Material Test Report — Valve Body, Aluminum A360 (2026)

SGS chemical composition analysis of the low-copper/low-zinc valve body casting used in Xiechang DCF-series pulse valves, confirming the declared A360 aluminum die-casting alloy. Supersedes report SHIN2601000469ML10_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Valve Body, Aluminum ADC12 (2026)

SGS chemical composition analysis of the standard valve body casting used in Xiechang DCF-series pulse valves, confirming the declared ADC12 aluminum die-casting alloy. Supersedes report SHIN2601000469ML09_CN dated 2026-01-16.

Test Report

DCF

Material Test Report — Valve Core / Armature Plunger (2026)

SGS chemical composition analysis of the moving armature core of Xiechang DCF-series solenoid pulse valves, confirming a 13% chromium soft-magnetic ferritic stainless steel. Supersedes report SHIN2601000469ML15_CN dated 2026-01-16.

Test Report

DCF series diaphragm

SGS Material Analysis Report — Pulse Valve Diaphragm Confirmed as Nitrile Rubber (NBR)

SGS qualitative main-component analysis (FTIR, ASTM D3677) of a DCF-series solenoid pulse valve diaphragm, identifying the base polymer as nitrile rubber (NBR). Confirms the diaphragm compound material declared for Xiechang pulse valves.

Company Honor

Council Member Unit — Suzhou Alliance of Industrial Internet (SZAII)

Plaque naming the company a council member unit of the Suzhou Alliance of Industrial Internet, a municipal industry alliance promoting industrial-internet adoption among Suzhou manufacturers.

Company Honor

Member — Suzhou Association of High-tech Enterprises

Membership certificate of the Suzhou Association of High-tech Enterprises, the municipal association of companies recognized under China's High-tech Enterprise program.

Company Honor

Standing Council Member, 5th Council — Suzhou Overseas Friendship Association

Appointment of Xiechang President Liu Jin to the standing council (5th term) of the Suzhou Overseas Friendship Association — a recognition of the company's standing in Suzhou's business community.

Company Honor

Vice President Certificate — Jiangsu Environmental Protection Industry Association (2021-2026)

Certificate showing that Suzhou Xiechang Environmental Protection Technology Co., Ltd. was elected a vice-president unit of the Jiangsu Environmental Protection Industry Association council for the 2021-2026 term, reflecting its leading position in the provincial environmental protection industry.

Company Honor

ZNF-Y-76S

'Made in Suzhou' Brand Certification

Certifies that the Xiechang-brand electromagnetic pulse valve for baghouse dust collectors (model ZNF-Y-76S) meets the 'Made in Suzhou' brand certification requirements, assessed by China Quality Mark Certification Group via product testing, initial factory inspection and post-certification surveillance. A regional quality-brand certification under the Suzhou municipal program.

Company Honor

AAAAA-Grade Labor Security Credit Rating Unit, Suzhou Industrial Park (2021)

District-level government recognition rating Suzhou XieChang an AAAAA (top-grade) labor-security credit unit of Suzhou Industrial Park for 2021, reflecting compliance with labor and social security regulations.

Company Honor

AAAAA-Grade Labor Security Credit Rating Unit, Suzhou Industrial Park (2024)

District-level government recognition rating Suzhou XieChang an AAAAA (top-grade) labor-security credit unit of Suzhou Industrial Park for 2024. Certificate dated 5 January 2026.

Company Honor

AAAAA-Grade Labor Security Credit Rating, Suzhou Industrial Park (2018)

District-level honor certifying the company as an AAAAA-grade (highest) labor-security credit-rating employer in Suzhou Industrial Park for the year 2018, awarded by the park's Labor and Social Security Bureau.

Company Honor

Certificate of Enterprise Credit Grade (AA)

CAEPI, the national environmental protection industry association, evaluated Suzhou XieChang's enterprise credit standing and rated it grade AA. Valid until 31 December 2026; verifiable at www.caepi.org.cn.

Company Honor

Contract-Honoring and Trustworthy Enterprise, 2017-2018 (Suzhou Industrial Park)

Public-notice certificate from the Suzhou Industrial Park market regulator recognizing the company as a 'contract-honoring, trustworthy' enterprise for 2017-2018, a district-level commercial-credit designation subject to public supervision (SIP Market Supervision notice [2019] No. 88).

Company Honor

Environmental Protection Science and Technology Award - Second Prize (2020, National)

National-level Environmental Protection Science and Technology Award, Second Prize, awarded December 2020 for the project 'IoT control technology and engineering application of intelligent baghouse dust collection systems', with Suzhou XieChang as the first completing organization.

Company Honor

Honorary Certificate — University-Enterprise Arbor Day Tree-Planting Activity

A corporate social responsibility recognition: the company planted an osmanthus tree in a university-enterprise Arbor Day eco-forest activity organized by Suzhou University of Science and Technology. A goodwill certificate, not a technical or quality credential.

Company Honor

ISO 14001:2015 Environmental Management System Certificate

English-language issue of the company's current ISO 14001:2015 environmental management system certificate; scope covers environmental management activities related to design and manufacturing of automatic control instruments, electromagnetic pulse valves, filter bags, frames and accessories for bag filters.

Issued as Chinese/English twin certificates.

Company Honor

ISO 45001:2018 Occupational Health and Safety Management System Certificate

Current ISO 45001:2018 occupational health and safety management system certification; scope covers OHS management activities related to design and manufacturing of automatic control instruments, electromagnetic pulse valves, filter bags, frames and accessories for bag filters.

Company Honor

ISO 9001:2015 Quality Management System Certificate

Current ISO 9001:2015 quality management system certification covering design and manufacturing of automatic control instruments, electromagnetic pulse valves, filter bags, frames and accessories for bag filters; issued by a CNAS-accredited certification body under the IAF multilateral recognition arrangement.

Company Honor

Jiangsu Province Quality Credit Grade-A Enterprise, 2013 (first batch) — official notice

Official government notice (not a certificate) publishing the 2013 first batch of Jiangsu Province Quality Credit Grade-A enterprises; 214 Suzhou companies including Xiechang met the provincial grade-A quality-credit criteria after voluntary application and multi-level review.

Company Honor

Jiangsu Province Science and Technology SME

Provincial-program qualification recognizing the company as a Jiangsu Province science-and-technology-oriented small and medium-sized enterprise, stamped by the Suzhou Municipal Science and Technology Bureau.

Company Honor

Jiangsu Provincial Baghouse Dust Collection System Engineering Technology Research Center - Approval, Acceptance and 2022 Performance Evaluation Documents

A document bundle for the provincial-level 'Jiangsu Baghouse Dust Collection System Engineering Technology Research Center' hosted by Suzhou XieChang: the 2013 establishment approval (document Su-Ke-Ji [2013] No. 289), the 27 July 2016 acceptance opinion, and the 2022 performance evaluation notice (Su-Ke-Ji-Fa [2022] No. 125, dated 26 May 2022) in which the center was rated 'qualified' (item 767 of the province-wide list).

Company Honor

Leading Enterprise, Top 100 for Technological Innovation in China's Cement Equipment Industry

Industry-association honor naming the company a leading enterprise among the Top 100 for technological innovation in China's cement equipment industry. Issued jointly by two national building-materials industry bodies; the date on the certificate (partly covered by the seals, circa November 2012) is not fully legible.

Company Honor

Most Influential Disability-Assistance Project 2021 ('Child Companion Program') — Suzhou Municipal Government Committee on Disabled Persons' Work

Honorary certificate from a Suzhou municipal-government committee naming the company's 'Child Companion Program' (accompanying special-needs children) the most influential disability-assistance project of 2021; a corporate-social-responsibility award.

Company Honor

National High-Tech Enterprise Certificate

Certifies the company as a National High-Tech Enterprise under China's national program, jointly approved by the Jiangsu provincial science & technology, finance and taxation authorities. Valid for three years from 2023-11-06.

Company Honor

National Key Environmental Protection Practical Technology (honor certificate)

National-level industry honor listing the company's 'ultra-low-pressure large-diameter solenoid pulse valve for baghouse dust collectors' as a National Key Environmental Protection Practical Technology (no. 2012-053), issued by CAEPI. The certificate names the six principal developers, including Liu Weidong.

Company Honor

Outstanding Member 2018 — Jiangsu Enterprise Informatization Association

Honorary credential naming the company an outstanding member of the Jiangsu Enterprise Informatization Association for 2018, a provincial industry association promoting enterprise digitalization.

Company Honor

Special Award for Charitable Assistance (2018) — Suzhou Industrial Park Overseas-Chinese Federation

Awarded to Xiechang President Liu Jin for the company's charitable-assistance work in Suzhou Industrial Park, part of Xiechang's ongoing community engagement.

Company Honor

Specialized, Refined, Distinctive and Innovative (Zhuan-Jing-Te-Xin) Enterprise in Environmental Protection Equipment Certificate

Recognition by the national environmental protection machinery industry association naming Suzhou XieChang a 'Zhuan-Jing-Te-Xin' (specialized and innovative) enterprise in environmental protection equipment. Issued January 2017 by an industry association at national level.

Company Honor

Suzhou Environmental Protection Science and Technology Award - Second Prize (2019, Intelligent Pulse Valve)

Municipal-level science and technology award (established with approval of the Suzhou Science and Technology Bureau under Suzhou government document [2018] No. 98): Second Prize awarded to Suzhou XieChang for the project 'intelligent solenoid pulse valve for baghouse dust collectors'.

Company Honor

Suzhou Environmental Protection Science and Technology Award - Second Prize (2023, Intelligent Baghouse Cleaning Technology)

Municipal-level science and technology award: Second Prize awarded 16 October 2023 to Suzhou XieChang for the project 'intelligent pulse-cleaning technology for baghouse dust collection and its application'.

Company Honor

DMY

Suzhou Municipal Science and Technology Progress Award, Second Prize (2014)

Municipal-level science and technology progress award (second prize) conferred by the Suzhou Municipal People's Government for the project 'DMY ultra-low-pressure large-diameter solenoid pulse valve'. Recognizes the company's R&D achievement for the 2014 award year.

Company Honor

Third Prize — Jiangsu Provincial Environmental Protection Science & Technology Award

Provincial-level science and technology award (third prize) granted by the Jiangsu Provincial Department of Environmental Protection for the project 'Electromagnetic pulse-jet cleaning technology for baghouse dust collectors'. Awarded to Suzhou Xiechang Environmental Protection Technology Co., Ltd. in December 2010.