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Solar Water Heater china manufacturer
1,The material of the outer tank is Galvanized Steel. The material of the inner tank is SUS304 2B stainless steel. 2, The life of the vacuum tubes is fifteen years. 3,Stable and reliable performance, well resistance. 4,Temperature when exposed to sun without water: 250,2.5 hours to boiling point if using single tube. 5,It resists 25mm hail. Heat preservation:72 hours. 5 years warranty. 6,optional accessories:assistant tank, electric heater
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