所以，对于既有建筑中的暖通空调系统的改造工程是非常需要的，只有这样放眼于未来的利益才能在节能这条路上走的更远。
Therefore, the existing buildings in the HVAC system renovation project is much needed, so look to the future interests of this energy can go farther on.
所以，对于既有建筑中的暖通空调系统的改造工程是非常需要的，只有这样放眼于未来的利益才能在节能这条路上走的更远。
Therefore, the existing buildings in the HVAC system renovation project is much needed, so look to the future interests of this energy can go farther on.
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