... Produce PCB and FPC board 4. UL, RoHS, SGS High Quality PCB Manufacturing Shenzhen Yuzhixiang Electronics Co., Ltd, also named Sunsoar ... Materials (RoHS Compliant) , CEM-3, CEM-1, Aluminium, High frequency Material (Rogers, Teflon, Taconic)Layer No.1 - 30 LayersBoard ... finishHAL, HASL Lead Free, Immersion gold, Gold plating, Gold finger, immersion silver, immersion Tin, OSP, Carbon ink,Certificate ROHS ...