PCB manufacturer: Competitive price fast delivery 16 years of experience in PCB industry UL,SGS,ISO9001,RoHS,QS9000,TS16949 Key SpecificationsMaterials: FR-4, CEM-3, Teflon, aluminum, Rogers and high TgSurface finish: lead-free HASL, immersion gold/tin/silver, OSP, gold finger plating, selective immersion gold and gold platingLayers: 1 to 22Finished holes tolerance: PTH ±0.075mmNPTH: ±0. ...