Types of lamp socket 1.E10/E11/E12/E14/E27/E26/E40/E39/B22 lampholder series 2.Porcelain,Bakelite, Plastic etc. 3.CE,RoHS Types of lamp socket , E27 Lamp Holder Socket Types We manufacture various types of lamp holder,E10, E11, E12, E14, E17, E27/E26, E39/E40, B22 etc.Pls kindly view our website or send us your products pictures for inquiry. Item No. V507-3, E27Material: Porcelain, Aluminum screw ...