... Tin,Chemical Gold,Immersion Sliver/Gold,OSP,Gold PlatingSolder mask color:white ,black,yellow,red,green ,blueProfiling:Punching,Routing,V-CUTCertificates ... past ten years .Now ,ZXH has set up four production bases in Shenzhen ,Foshan,Shangrao and ji'an to produce high ... R&D, sale ,Market, Logistics and Purchase. And four production bases occup 500 mus area ; There are more than 2,500 ...