Host and central air-conditioning system design, according to loading, debugging, maintenance, maintenance costs 30 percent to float downward... 4: central air-conditioning system of water treatment.

中央空调主机及系统的设计、按装、调试、维修、保养费下浮30%…4：中央空调系统的水处理。

youdao

Host and central air-conditioning system design, according to loading, debugging, maintenance, maintenance costs 30 percent to float downward... 4: central air-conditioning system of water treatment.

中央空调主机及系统的设计、按装、调试、维修、保养费下浮30%…4：中央空调系统的水处理。

youdao