1, Taian Construction Engineering Group Co., Ltd.
2. Taian Shandong Guangbang Construction and Installation Co., Ltd.
3. Shandong Junhui Construction Group Co., Ltd
4. Xingrun Construction Group Co., Ltd
5. Shandong Yitong Installation Co., Ltd.
6. Xinbang Construction Group Co., Ltd
7. Shandong Xiantong Installation Co., Ltd.
8. Shandong Ito Construction Group Co., Ltd
9. Lujing Construction Engineering Co., Ltd.
10, Shandong Guangbang Construction and Installation Co., Ltd.
1 1, Voda Construction Group Co., Ltd.
12, Shandong Futai Construction Engineering Co., Ltd.
13, Mulcaster Construction Co., Ltd.
14, Shandong Ruike Electric Co., Ltd.