... hole tolerance ±0.002” (0.050mm) Plating Min. hole size 0.0008” (0. ... V-cut angle 15°,18°,30° V-cut Shape 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 single side plating ...