... 4. Specialized in PCB manufacturingWelcome To HCX Shenzhen Hengchengxin Circuit Board Co.,Ltd Detailed specification of PCB manufaturing capacity: • General ... .08mm)Solder MaskColorgreen,light green,matte green,white,extreme white,black,matte black,dark brown,yellow,red,blue,transparentMin. solder mask clearance0 ... and then set out to surpass them. PCB Printed Circuit Board 2layer Black Solder Mask