... /printed circuit board 2.10years experience about PCB and PCBA 3.FR1 FR4 CM1 CM3 4. ... 1-24layers 5.OHSAS HDI Electronic PCB board,IC PCB board,Suface finishing:Immersion gold/silver,OSP,HASL ... ,ENIG,Tin-plating,Gold fingerSolder mask:White,Blue,Red,Green, ... Certificate ROHS ISO9001:2000 TS16949 SGS UL HDI Electronic PCB board,IC PCB board