... products include blank pcb, single sided pcb,double sided pcb,multilayer pcb,flexible pcb,fr4 pcb,fr2 pcb,fr1 pcb,cem1 ... .008”(0.4mm ±0.1mm) Bow and twist < 7/1000 Copper Weight Outer Cu weight 0.5oz ~ 3.0oz Inner Cu ... pcb,kindly contact me for more details! 1.6MM thickness copper clad Single Side PCB Boards