Super thin type without edge angle design Side draw and bounce type structure It can guarantee water drop, ground wax and so on liquid is not easy to leak in. Die-casting brass (or aluminum alloy) case, so it can super strongly pressure-proof. Any mating two-pole with ground socket, the telephone, TV, date and so on weak electricity interface modules. Own interface ability of two times of single line plug volume, mating special aluminum alloy die-casting cassette. XDC series ground plug have gained national patent.