... -1,CEM-3 Board Cutting Max. number of layers 8 Min. thickness for inner layers (Cu thickness are excluded) 0.003”(0 ... line,hole,V-shape Surface Finish HASL,HASL pb free,immersion gold,immersion silver,immersion tin,O.S.P (Entek),S/G plating,ENEPIG ... ,G/F plating,carbon… Gold Finger angle 15° 30° 45° 60° Others UL Cert. YISO Cert.ISO9001TS16949YISO14000Y prototype pcb manufacturing