... .FR4,UL&ROHS Approval 4.Thermal consideration&B/B design Rigid multilayer 4 Layer PCB prototype PCB ... Density Inverter PCB,thick copper PCB3.Materials: FR-4, CEM-3, Teflon, Aluminum Substrate, Rogers, ... Halogen Free, High Tg 4.Copper Thickness: 140micron(4oz)5.Min Board Thickness ... In Circuit Test),FCT(Functional Circuit Test) technology.4) PCB Assembly With UL,CE,FCC,Rohs ...