... gold finger pcb with 4layers.Our ability specifications: Materials: FR-4, CEM-1, aluminum, and moreFinish board thickness: ... : 17 to 140umCopper plating hole: 18 to 40umTrace width and line spacing: 0.075/0.1mm (3/4 ... black, and moreApplications: CCTVs, DVD players, mobile phones, LCD molds, stereos, Bluetooth, computers, and moreUL:E320045ROHS:A001C100827049001-2SGS:CANEC1000312001 double sided PCB ...