1)PCB assembly SMT processing(OEM&ODM) 2)Supplying single-sided,double-sided,multilayer PCB 3)PCBA,layout designed PCBA specific instructionMaterial:FR-4Layer: 2 layersSurface finish, HASL lead freeSolder mask: GreenSilk screen: WhiteThe othere surface finish we could do are; Gold finger, OSP, ENIG, HAL, Gold plating, Chemical silver, etc.The other solder mask type we could do are: Red, yellow, ...