1.mpcb,aluminium pcb board 2.2 layers 3.UL ,SGS ,ROHS,ISO ... Copper Weight0.5--6ozColor Solder MaskGreen, Blue, Black, White, Yellow, Red, Matt Green, Matt Black, Matt BlueSilkscreenWhite, Black, Blue,YellowAcceptable File ... PCB supply ability: 30000 Square Meter/MonthCertificate:ROSH,ISO9001,UL Aluminium pcb board,MPCB