... 5)Safe, Durable & Low Price Knife Switch Double-2P20A! remote control switch Product NamePorcelain Knife Switch Double-2P20A ManufacturerFuzhou Longhuang Electrical Apparatus Co ... specializing in electroporcelain products like porcelain lamp holder, knife switch, low & high voltage insulator, fuse, and bakelite lamp ... ! Let Longhuang go to the world! Knife Switch Double-2P20A! remote control switch