... ,irregular etc Solder mask color: White/Yellow/Green/Black/Red/Blue Silk Screen color: White/Black/yellow Board thickness tolerance: ±10% ... Copper weight tolerance: ±0.25oz PTH/Silk holes: Yes Certification: UL,ROHS,CE,ISO9001,ISO14001 Service: one ... mask Double-sided green LPI,Also support red,white,yellow,blue,blackSilk screenDouble-sided or single-sided in white,yellow, ...