... specialized in the research, development and production of lamp holders, knife switch, fuse, insulator, ceramic tiles, and so on. ... among customers.4We will reply your enquiry in 24 working hours and offer good after sales service.Specification1) Main ... T/T or L/C at sight.knife switch, porcelain knife swtich , ceramic knife switch , knife switchPackage Details As Belowing: StyleModelQTY/CTNG.W ...