Product: FR4-CCL Standard: IPC-4101C/21 Certificate: UL/ROHS/SGS,/ISO9000 Copper foil: single side/double sides Thickness 0.2mm~3.2mm Thickness of Copper Foil 18m~105m Thickness Tolerance: Class B/L&Class C/M under IPC-4101 Tg: 135,5/Different TG available upon request. 940x1245mm, 1042x1245mm, 1092x1245mm.