Place of Origin:Shenzhen, ChinaBrand Name:FAST PCB Technology Copper Thickness:0.5-6ozBoard Thickness:0.4-4.2mmMin. Hole Size:0.1-6.5mmMin. h:3milMin. ing:3milSurface Finishing:Flash gold(electroplated gold)ãENIGãHard goldãFlash goldã HASL Lead freeãOSPãENEPIGãSoft goldãImmersion silverãImmersion TinãENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Goldfinger,Immersion silver+Gold finger,Immersion Tin+Gold fingeMax Layer:48LPCB Standard:IPC-A-600Solder Mask:Green,Black,Blue,Red, White,Yellow, Matt Greenï¼Matt Black, Matt BlueLegend:White, Black,Red,Yellow