... manufacturing service(EMS), especially in intelligent control boards, high frequency boards and other PCBAs ... high quality and consistency;Third, experienced logistic control;Fourth, cost effective factory located in Shenzhen ... FR-4Copper Thickness: 1~5OZ Board Thickness: 0.4~7.0mmMin. Hole size: 0.15mmMin. Line ... plated gold,immersion Au, Ag, Sn ,... 4.Our certification:RoHS,SGS,ISO9001:2000,IPC-610,UL ...