... (0.050mm)Angle of Countersink80°,90°,100°,120°PlatingMin. hole size0.0008” Aspect ratio20EtchingTrace width tolerance±20%Min. trace ... black,matte black,dark brown,yellow,red,blue,transparentMin. solder mask clearance0.003”Thickness0.0004”SilkscreenColorWhite,black,yellow,red,blue ... F plating,carbon…Blind and Buried Vias3+N+3YResin,hole-filling ink,PTHYOthersUL Cert.YISO Cert.ISO9001/ISO14001/ ...