... circuit board / flexible FPC pcb board / FPC sample.high manufacture technology,strict quality requirement Detail Description of FPC:Specification: double-sided fpcb, ... substrates, iron substrate,plug-and-aluminum plate,single-sided and double-sided PCB, FPC,FR-4,multi-layer circuit boards ... plating, gold-plating, sinks the gold, anti- oxidized board as well as each kind of selective surface furnishing. ...