1.Enamel bladder, 2.Protection against dry heating, 3.Leakage protection, 4.Two tank - more info check here: http://www.sourcingappliances.com/30L-Water-heater-electricity-10140814/
Overheating protection Dry operation protection Small size suitable for small space Using polyurethane foam insulation Dry spray cans and enamel porcelain technology
certification
Conform to IEC335-2-21 and IEC335-1 standard
Product Items Relevant with 30L Water heater electricity - CSC-30