Hi need FR4 Glass Epoxy Copper Clad Laminate SheetQuantity:500 Piece PiecesDetails:Material:FiberGlassRated Voltage:40KVApplication:High TemperatureType:Insulation SheetTensile Strength:ExntThickness:0.4-3.0 mmSize:37" x 48", 40" x 48", 41" x 49"Copper thickness:1 1,1 0,H H,H 0,2 0,2 2 etcColor:yellow , greenUsage:Appliance Industry and General Electronic ProductsFeature:Heat-ResistantType:Insulation Sheet