... heating element/electric heater Quality certification :TUV,UL Kettle used Stainless steel electric heating elementFeatures:1)heating fast, reliable quality2 ... :1) Insulation materials: magnesium oxide2) Tube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, ... requirements. Quality guarantee, welcome to inquiry. Kettle used stainless steel electric heating element