... in our factoory,double sided pcb,pcb board,rigid pcb past UL, ISO9001, ISO14001,ROHS Plating gold PCB, double sided pcb,pcb board,rigid pcb ... Reference - Our Production Capability for Rigid PCB:1) Layer: 1,2,multilayer2) Board finished thickness ... HASL lead free, Chemical tin,Chemical Gold, Immersion Silver/Gold,OSP,Gold plating 8) Copper thickness: 0.5-2.0 OZ9 ...