... ,Chemical Gold,Immersion Sliver/Gold,OSP,Gold PlatingSolder mask color:white ,black,yellow,red,green ,blueProfiling:Punching,Routing,V-CUTCertificates:ISO9001 ... of Shenzhen with 1,2000 square meters of office area, where is the group center of R&D, sale ,Market, Logistics and ... PCB management and production ; its annual output of PCB products is up to 1000,000 square meters , and the Products are ...