6 patent of invention on main element-heater, Aluminium Die Casting, No creepage, anti-scale, heating efficiency is more than 99.97%.
核心发热体拥有6项国家发明专利，采用铝合金压铸一次成型，永不漏电，不结垢，热效率高达99.97%。
6 patent of invention on main element-heater, Aluminium Die Casting, No creepage, anti-scale, heating efficiency is more than 99.97%.
核心发热体拥有6项国家发明专利，采用铝合金压铸一次成型，永不漏电，不结垢，热效率高达99.97%。
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