The entire building 70% carries on through the natural way ventilates, the heat energy saves above 30%.

整个大楼70％通过自然的方式进行通风，热能节约在30％以上。

youdao

The entire building 70% carries on through the natural way ventilates, the heat energy saves above 30%.

整个大楼70％通过自然的方式进行通风，热能节约在30％以上。

youdao