lampbase,porcelain lamp holder,ceramic lamp socket 1)E27,E40,E26,E14,B22 2)CE/LVD/ROHS ... )Metal:Copper/Iron/Aluminium Porcelain lampholder,lamp holder,porcelain lamp socket,ceramic lampbase 1.E10,E12,E14, E26,E27,E39, E40 ... and overseas market. E14 Porcelain Lampbase with CE and ROHS Certificate