The invention reduces the wall thickness and does not need heating facilities, thereby reducing energy consumption.
减小墙体厚度且无需采暖设施，降低了能耗。
When the wine storing kettle does not need heating, the base can be removed, so the wine storing kettle can be used as a general wine kettle.
不需要加热时，可以去掉底座，这样盛酒壶又可以作为一般的酒壶使用。
The heat pump system does not need any artificial resource, it can replace the traditional heating and cooling way such as coal boiler, city heating net and centrality air-condition system.
它无须任何人工资源，彻底取代了锅炉或市政管网等传统的供暖方式和中央空调系统。
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