塑料管具有耐腐蚀、不结垢、质量轻、使用寿命长等特点。
PVC-U plastic pipe has the character of corrosion resistance, no-scale, light weight and long service life.
生产实践表明，采用螺旋板换热器具有不结垢、传热系数高、能耗低、生产能力大、体积小和操作方便等优点。
The practical results show that the plate coil has the advantages of anti-scaling, high heat-transfer coefficient, energy saving, better production capacity, less bulk...
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%.
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