For example, high chilled zone should add heating system. It may note in the order.
如用于高寒地区要增加采暖系统，可直接在订货时说明。
In the hot summer and cold winter zone, both air conditioning and heating are needed.
在夏热冬冷的地区，取暖设备和空调皆备。
In the hot summer and cold winter zone, both air conditioning and heating are needed.
在夏热冬冷的地区，取暖设备和空调皆备。
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