1.E27 Screw Lamp Holder 2.Material: porcelain, copper Bakelite material body, Copper inside 3.Certificate: ... Model NO.B018-1 E273 Material : Porcelain,Copper4 Voltage : 220v 5 Size: E27type lamp holder with decoration pattern6 Easy installation. simple ... experienced in producting high and low voltage product, such as lamp holder, socket, plug, light, switch, connector, fuse, insulator, spindle, ...