1.FR-4 single side 1 layer pcb bare board. 2.Meet ROHS, UL, SGS. ISO9001:2000. ... : FR-4, Aluminium Base, Rogers, Taconic, TeflonFinish Board Thickness: 0.2mm-3.2mm (8mil-126mil)External Copper ... 4, AL PCB, CEM-1, Taconic, RogersFinish Board Thickness0.2mm-3.2mm(8mil-126mil)Copper Thickness1/2 ... inch)ConductorWidth(W)+/-0.05mm(2mil)+/-20%of original artworkHole Diameter(H)PTH L:+/-0.075mm(3mil ...