Which companies are larger in Chengdu HVAC Company?

There are many large HVAC companies in Chengdu, such as Huashang HVAC, which is the earliest professional floor heating company established in Chengdu. Now its business is mainly heating, and it is expanding in the direction of comfortable home. The main business includes heating, central air conditioning, fresh air system and household water purification. In addition, beautiful scenery is their old rival, which is also very good. There is also a well-known flower sea.