porcelain lampholder, E27 519 porcelain lampholders E27 porcelain lampholder : 1 . product's name : porcelain lamp holder 2 . certificate : CE 3. voltage: 110v-    250V Electric current : 4A 4.main material : high pressure & ceramic , porcelain . 5.metal : iron, aluminum alloy, brass, red copper . 6.it uses to decorate lighting and as lamp accessories ; 7.available wire : 0.75mm2 8.contact type : screw style , receptacle style 9.OEM, ODM available 10. packing : 400pcs/ctn, 22/21kgs, 41*33*29cm 11. delivery time : 20 -30 work days after order confirmation .