special pcb PCB for electric control, four-layer PCB, ROHS certificate Suppluy all kinds of pcba , special pcbPCB for electric control, four-layer PCB, ROHS certificateShanghai Jingling Enterprise Co., LTDAdd: 411# Jiuxin Road, D-of Songjiang, Shanghai, 201615, PR. ChinaTel: (8621)37693956 Fax: (8621)57639806 PCBA