... 20(5:1) Solder Mask Color green,light green,white,black,dark brown,yellow,red,blue Min. solder mask clearance 0.003 ... ”(0.012mm-0.017mm) Silkscreen Color White,black,yellow,red,blue,green Min. Size 0.006” (0.15mm) Electrical testing Flying ... pcb,kindly contact me for more details! 1.6MM Thickness ,LED car light,FR4 Single Sided PCB