... price 2, high quality 3, quick delivery 4, considerate services red single-sided pcb its characteristic is that the internal sress ... stronger, and wear-resisting degree is high. process characteristics: contain copper plating nickel gold three layers of metal, including Ni quartile ... Sliver/Gold,OSP,Gold PlatingSolder mask color:white ,black,yellow,red,green ,blueProfiling:Punching,Routing,V-CUT ...