environmental protection,energy conservation, scale prevention, This kinds of quartz electric Heater is used for auxiliary heatingof the solar power , which may provide hot water on those days without sunshine. And its rated heating power has1.5KW ,2.5KW, 3KW,4KW,5KW,6KW and so on. Any sizes can be made as your request, so pls kindly sent me your drawings and contact with me .