... . Produce PCB and FPC board 4. UL, RoHS, SGS FR4 Rigid PCB Board from Shenzhen ChinaShenzhen Yuzhixiang Electronics Co., Ltd, also ... , Gold plating, Gold finger, immersion silver, immersion Tin, OSP, Carbon ink,Certificate ROHS ISO9001:2000 TS16949 SGS ULSpecial requirementsBuried and blind ...