Core Competency / Capabilities
15+ years of precision PCB fabrication. From prototype to high-volume production, FQC delivers multilayer, HDI, heavy-copper, and high-speed low-loss PCBs under nine ISO/IECQ/IATF certifications.
Parent spec · production-validated
| Parameter | Value | Notes |
|---|---|---|
| Max layers | 100 | Parent spec · production-validated |
| Board thickness | 0.4 – 6.5 mm | Rigid |
| Min trace / space | 2 mil / 50 μm | Production-grade |
| Min mechanical drill | 6 mil (0.15 mm) | — |
| Min laser via | 3 mil (0.075 mm) | CO₂ or UV |
| Max aspect ratio | 20:1 | Mechanical through-hole |
| Impedance tolerance | ±5% | vs. industry ±10% |
| Max copper weight | 15 oz outer / 13 oz inner | UL-listed |
| Max frequency | 40 GHz | Megtron / Rogers / Taconic |
| Surface finishes | ENIG, ENEPIG, OSP, HASL, Immersion Silver, Gold Fingers | — |
| HDI build-up order | Up to 5th-order Any-Layer | — |
| HDI max layers | 16 | Any-Layer |
Source: parent-company (Sihui Fushi) published capabilities, fsqualitypcb.com
Every board moves west-to-east through a single 12-station flow. Each station is gated against ISO/IATF process parameters before advancing.
Copper-clad laminate sheet cutting from raw stock.
Direct laser imaging of inner-layer circuits.
Develop, etch, and strip of inner layers.
100% automated optical inspection of each panel.
Copper surface treatment before multilayer bonding.
Multilayer stack bonding under heat and pressure.
Through-hole and microvia drilling.
Desmear and electroless copper deposition.
Vertical continuous plating for copper thickness.
Photoimageable solder resist apply and cure.
Reference-designator inkjet printing.
V-cut/rout, 4-wire flying-probe e-test, AVI + X-ray final, packaging.
A single 406 × 60 m production building houses the full 12-station line. 24 robotic arms handle inter-process transfer — boards never leave the line.
Stocked inventory of 8+ high-reliability laminates matched to customer Dk/Df and impedance specs. Hybrid PTFE stack-ups built to print on request.
Coming soon — contact sales for detailed spec requirements.