... plates,copper substrates, iron substrate,plug-and-aluminum plate,single-sided and double-sided PCB, FPC,FR-4,multi-layer circuit boards, as ... in the production for hard printed circuit board and the flexible printed circuit board. The company is strictly carried out the ... , nickel-plating, gold-plating, sinks the gold, anti- oxidized board as well as each kind of selective surface furnishing. Special ...