Copper Thickness:0.5-6oz Board Thickness:0.4-4.2mm Min. Hole Size:0.1-6.5mm Min. Line Width:3mil Min. Line Spacing:3mil Surface Finishing:Flash gold(electroplated gold) ENIG Hard gold Flash gold HASL Lead free OSP ENEPIG Soft gold Immersion silver Immersion Tin ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finge Max Layer:48L PCB Standard:IPC-A-600 Solder Mask:Green,Black,Blue,Red, White,Yellow, Matt GreenMatt Black, Matt Blue Legend:White, Black,Red,Yellow