... in the research, development and production of lamp holders, knife switch, fuse, insulator, ceramic tiles, and so on. We ... Copper and iron selectable;7)Packing: standard paper carton;8)Delivery:7days;9)Payment:T/T or L/C at sight.knife switch ... , porcelain knife swtich , ceramic knife switch , knife switchPackage Details As Belowing: StyleModelQTY/CTNG.W ...