... 0.008”(0.4mm ±0.1mm) Bow and twist < 7/1000 Copper Weight Outer Cu weight 0.5oz ~ 3. ... ” (0.02mm) Aspect ratio 20(5:1) Solder Mask Color green,light green,white,black,dark brown,yellow,red,blue ... Depth( residual thickness ) FR-4(1/3+-0.1mm);FR-1,FR-2,CEM-1,CEM-3(1/2+-0.1mm) V-cut ... If you are confused with pcb,kindly contact me for more details! 1.6MM Thickness ,LED car light,FR4 Single Sided PCB