1, Qingdao oster electric drive equipment co., ltd.
2. Qingdao Chang Rong Chemical Technology Co., Ltd.
Qingdao qi zhou rubber co., ltd
4. Qingdao Tongfang Environmental Engineering Equipment Co., Ltd.
5. Qingdao Tongfang Thermoelectric Equipment Co., Ltd..
6. Qingdao Sanrun Packaging Products Co., Ltd..
7. Qingdao Xuan Ying Electronics Co., Ltd.
8 Qingdao Maoxiang Rubber Co., Ltd.
9. Qingdao hongruite food co., ltd.
10, Qingdao shengci technology co., ltd.