... .Low energy use 3.Digital controls 4.Compact size High quality digital melting furnace machine NAP-MF-HK4 DetailsPower supply: ... Net weight: 45KgFeatures1,MM-F Series is advanced melting equipment for gold, silver, copper and other non ferrous metal ... big output power, stable high efficiency3,With various protection as over voltage protection, over and current protection, insufficient water protection ...