Quality and certifications
We list every certificate number in full so your supplier-quality team can verify it with the issuing body. Testing is 100%: every board is electrically tested before it ships.
Certificates
| Standard | Scope | Certificate no. | Valid until | Verify |
|---|---|---|---|---|
| ISO 9001:2015 | Production and sales of printed circuit boards | 44525Q20003R0M | 2028-01-01 | Verify |
| ISO 14001:2015 | Environmental management for PCB production and sales | 44525E20245R0M | 2028-09-07 | Verify |
| UL 796 (ZPMV2) | Recognized component, 6 types (single/double-sided, multilayer, metal-core), V-0, 130 °C MOT | E509426 | — | Verify |
| GJB 9001C-2017 | Defense-grade quality management system for PCB production | 0350125GJ30410R0S | 2028-05-15 | Verify |
| National High-Tech Enterprise | Recognised by the national high-tech enterprise programme (re-certified 2025) | GR202544201724 | 2028-12-24 | Verify |
UL recognition, File E509426
Six board types are recognized under UL 796 (category ZPMV2). All are rated V-0 with a maximum operating temperature of 130 °C and meet the UL 796 direct support requirements.
| Type | Construction | Assembly soldering limit |
|---|---|---|
| HSX-C | Single-sided, CEM-1 | 245 °C, 1 cycle |
| HSX-D | Double-sided | 260 °C, 2 cycles |
| HSX-D1 | Double-sided | 260 °C, 3 cycles; solder float 288 °C, 20 s |
| HSX-L | Single-sided metal-core | 260 °C, 1 cycle |
| HSX-M | Multilayer | 260 °C, 2 cycles |
| HSX-M1 | Multilayer | 260 °C, 3 cycles; solder float 288 °C, 20 s |
Inspection at every stage
Incoming inspection
Laminates, prepregs, copper foil and chemistry are checked against specification before release to production.
Inner-layer AOI
Every inner layer is scanned by automated optical inspection before lamination.
Lamination X-ray
X-ray checks registration after each press cycle on multilayer and HDI boards.
Outer-layer AOI
Outer layers are inspected after etching, with defects verified on dedicated stations.
Electrical test
100% open and short test on 27 flying-probe and 3 fixture testers.
Final inspection
Visual, dimensional and finish checks against IPC-A-600 before packing.
Reports available with your order
- Electrical test report
- Impedance test report
- Microsection report
- Certificate of conformance
- Material and RoHS declarations
Patents
We hold 27 granted Chinese patents, including invention patents CN110621118B (via-plugging method) and CN119300231B (multilayer high-frequency PCB), with four further invention applications published in 2026.
HSX / Our factory
Tested boards. Verifiable credentials.
AOI during fabrication. Electrical open/short testing on every board before shipment. Certificate numbers you can check, and inspection reports available with your order.
Automatic optical inspection
AOI checks circuit patterns during fabrication. Detected features are reviewed before boards continue through the process.
High-speed flying-probe testing
Flying-probe equipment tests continuity and isolation without a dedicated fixture, supporting prototypes and complex board designs.
Vacuum packaging
Finished boards are inspected and packed with moisture protection for shipment. Packaging requirements can be specified with the order.
Questions engineers ask us
How can I verify your UL recognition?
Search File E509426 in the UL iQ printed wiring board database (iq.ul.com). The record is under Shenzhen Huashengxin Circuit Co., Ltd.
Do you test every board?
Yes. Every board ships after a 100% electrical open and short test.
Send your design. Let’s build it properly.
Upload Gerber or ODB++, stack-up and quantities. Standard PCB quotes usually take 30 minutes in working hours; HDI, rigid-flex and special materials usually take up to 24 hours.