0 1: Tongzhou Jianzong Decoration Company: mainly undertakes indoor and outdoor decoration projects of various buildings. As an enterprise directly under the group company, it has the national first-class architectural decoration qualification and belongs to the first-class legal person.

02: Beijing Tongzhou Construction Group Company: Beijing Tongzhou Construction Group Company passed the ISO9002 international quality system certification, and in 2002 passed the occupational health and safety management system (GB/T2800 1-200 1) and the environmental management system (GB/T2400 1-2004) certification respectively.