1,Have gained CCC,CE ,ISO9001 certification 2,porcelain knife switch 3.2P single throw porcelain knife switch 1. 3P porcelain knife switch 60A2.iron ,brass3.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\ porcelain knife switch