... price 3.UL,ISO9001,ISO14001,TS16949,CE,. 4 Layer rigid PCB 4 Layer rigid PCB4 Layer rigid PCB 1.Our products are applied extensively ... our's pcb Capability 1layer1-35 layer2MaterialFR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-23Board ... lead free,Chemical tin,Chemical Gold,Immersion gold Inmersion Silver/Gold,Osp,Gold Plating9Copper thickness0.5-4.0oz10Solder mask colorgreen/black/white/red ...