1.mpcb,aluminium pcb board 2.2 layers 3.UL ,SGS ,ROHS,ISO 4.OEM & Design PCB Fulltronic PCB Technical Capacity: PCB Production CapacityPCB ItemManufacture CapacityLayer Counts1 ... --20LBase Material:FR4,High-TG FR4,CEM3,aluminum,High Frequency(Rogers,Taconic,Aron ...