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。

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With the capacity of bathrooms increasing fast, the heating facilities should be renovated.

由于浴室增容，须对加热设备进行改造。

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With the capacity of bathrooms increasing fast, the heating facilities should be renovated.

由于浴室增容，须对加热设备进行改造。

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