... board,PCB manufacturer. up to 8layers,copy PCBA/PCB/FPC,PCB/FPC design,FPC,circuit board Specifications: 1) Min. Trace width: ... (copper thickness): 13um~105um. (RA and ED copper) 7) Cover-layer: Polyimide and polyester (solder mask printing is available) 8 ... Epoxy, acrylic and polyester 9) Stiffener materials: FR-4, mylar and polyimide 10) Surface finishes: ENIG,Plated gold ,OSP fpc assembly ODM&OEM