lampholder,porcelain lamp socket,ceramic lamp base 1)E27,E40,E26,E14,B22 ,E39 2)CE/LVD/ROHS 3)Metal:Copper/Iron/ ... ,porcelain lamp socket,ceramic lampbase 1.E10,E12,E14, E26,E27,E39, E40 lampholder,porcelain knife switch,fuse unit series ... business independently.7. Meet CE/LVD/ROHS standard ModelPorcelain E14, E27, E40 Series etc. Body MaterialPorcelain/ ceramic Metal MaterialScrew shellaluminium ...