... Au, immersion Sn,/Silver, OSP, Flash Gold, HASL Leadfree+gold finger, conductive carbon ink. plating tinLayer:1~16 layersStandards of RoHSProvides ... all sorts of printed circuit board assemblies as well as electronic encased productsWe can supply Standard and Special PCB (including Rigid ... :· Eastern Europe· North America· Western Europe· America, Asia Golden Finger FPC(Flexible Printed Circuit Board)