... for PCBFR4, CEM-1, TACONIC, Aluminium, High Tg MaterialHigh FrequenceROGERS ,TEFLON, ARLON, Halogen-free Material3Rang of finish baords Thickness0.21-7 ... ), Immersion Silver , Gold Plating (Flash Gold), OSP, etc.14SoldermaskGreen, White, Red, Yellow, Black, Blue, transparent photosensitive soldermask, Strippable soldermask.15Minimun thickness ...