... ) Cooper thickness:1 oz 4) surface finish: HASL connector fpc or lcd display fpc pcb board1,base material:FR-4 epoxy resin2,cooper ... (Tin-Lead Free), ENIG(Immersion Gold), Immersion Silver , Gold Plating (Flash Gold), OSP, etc.14SoldermaskGreen, White, Red, Yellow, Black, Blue, transparent ... Thickness copper21Thickness of Copper0.5-14oz (18-490um) connector fpc or lcd display fpc pcb board