Energy saving 50% than gas steamer. Fast preheating speed Simple to operate,safe to ues, ... design, sturdy and durable, insect prevention,waterproof, anti-oil feature.3.Excellent design of heat preservation, the steam does not drain ... , high temperature protection of coils,etc.Installation condition:Operating voltage: 3 phase 5 line/380vThe Maximum wave voltage:340-430vOperating frequency:50 ...