specification 1)ISO9001,CE,VDE,ROHS certification 2)Main Material:bakelite 3)Many designs and professional technology VDE standard bakelite lampholder E271. E10,E12,E14, E26,E27,E39, E40 lampholder,porcelain knife switch,fuse unit series etc.2. Main Material:bakelite3. Professional Manufacturer4. Screw type.5. OEM/ ODM is acceptable6. Meet CE/LVD/ROHS standard we sincerely hope our hardworking, ...