Natural Thermal Circulating 300,000 to 3,000,000 BTU Gas
2020-5-18 · The use of high temperature insulation materials, heat loss is less, the boiler efficiency is increased by more than 5%. Never rust. Built-in food grade enamel coating, high quality water, not easy to fall off; anti-rust, anti-corrosion function, to ensure never rust. Long operating life.
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