... water storage system, a control system and a pump system. Solar water heating project can meet the needs for large quantities ... by factories, hospitals, hotels, and schools, etc.Production specifications:Solar collector system1) High efficient, to make full use of ... stainless steel.Out tank material: color steel.Insulation: polyurethane foamVacuum tube material: borosilicate glass 3.3: AL-N-AL absorbs ...