... constant temperature 3.Energy saving and efficient 4.Digital display Electric storage water heater,Electrical water heater:1, high-grade ... , pressure, corrosion resistance, anti-knock3, large dynamic VFD display working status, the operation simple and quick4, the original ... powder coating,heating tube: s/s 316, warm-keeping layer: non-fluorine amine-gathering resin,product Watt:2000W, Waterproof ...