1.FR-4 green color solder mask single side pcb bare board; 2.Meet ROHS, UL, ISO9001:2008, SGS test ... . 3.Rigid PCB bare board. pcb RODUCTION CAPABILITYSolder Mask Types: Green, White, Blue, Red ... -4, AL PCB, CEM-1, Taconic, RogersFinish Board Thickness0.2mm-3.2mm(8mil-126mil)Copper Thickness1/2 ... +-/10%double side pcb] FR-4 green color solder mask single side pcb bare board