PTC heater, self controlling heater, long life, easy to assemble. Configuration.TypeSpecialtyExcellenceshortcomingOthersTransflux heaterWater ... quick heatingWater must flow by itself or by a pump.Water can be heated in tap water supplyImmergingheaterHeater immerge ... , footbath, washing hand, vegetable and dish. PTC water heater for drink warmer and boiler, vapor generater, detailed introduction can ...