The reason is that it is unprofitable without independent property.

Extension:

China Construction Industry Association was established in June 1986, and its name was China Construction Industry Association. Since the second Council of 1993, it has been renamed China Construction Industry Association.

China Construction Industry Association is a national industry organization composed of enterprises, institutions, educational and scientific research institutions, regional construction industry associations, industry construction associations and related professionals engaged in civil engineering, construction engineering, line, pipeline and equipment installation engineering and decoration engineering activities in various regions and industries. It is a non-profit social organization with legal personality registered in the Ministry of Civil Affairs. In 2009, it was approved by the Ministry of Civil Affairs as AAAAA municipal national trade association.