1,Have gained CCC,CE ,ISO9001 certification 2,porcelain knife switch 3.2P single throw porcelain kni 1. 2P porcelain knife switch2.different colour is available .3.good design,high quality and long usage life.4.easy installation,Simple Operation5:packing :40pcs/carton6.Material plate bakelite wire copper7.Have gained CCC ,CE,ISO9001 certification\8, iron /brass