lamp holder: 1)CE,ROHS 2)OEM,ODM 3)fitting:copper,alu,iron,zinc alloy 4)We have our own factory Porcelain lampholder 1)Voltage250V-750VElectric current4A-16A2)Main materialHigh pressure & ceramic, common ceramic, porcelain3)Available wire1mm2 ;0.75mm2 ; 0.55 mm24)Contact typeScrew style, receptacle style;5)The price depends on the quantityTerminal block:Ceramic or porcelain,glazed porcelainKnife ...