... PCB and FPC board 4. UL, RoHS, SGS FR4 Rigid PCB Board from Shenzhen ChinaShenzhen Yuzhixiang Electronics Co., Ltd, also ... pcba or pcba sample for us3) The PCB specification: base material, board thickness, copper thickness, surface finishing, gold immersion thickness ... RoHS Compliant) , CEM-3, CEM-1, Aluminium, High frequency Material (Rogers, Teflon, Taconic)Layer No.1 - 30 LayersBoard thickness0. ...