Surrounded by 20mm thickness of aluminum silicate insulation cotton cover, good insulation properties, to avoid treauent heatina heat, enerav savina, extended service lite Cconcentricity, the heating area is more uniform, nickel-chromium heating wire, heating efficiency and higher life. Insulated high temperature bushing to protect the heating core lead To avoid the lead part of the ceramic aging rupture caused by leakage and other safety incidents Nickel-chromium, nickel-silicon is the best temperature line material, more accurate detection of tin furnace temperature Ultra-thick copper terminals and protective cover, safer!, Manufacturer: ZXZZAS