Xinjiang Changmei Mining Machinery Co., Ltd.
Shandong Changkongyan Aviation Technology Company
Weifang Keer Building Material Machinery Co., Ltd.
Beijing Zhongke Daizong Aviation Science and Technology Co., Ltd.
Shanghai Dragonlink Trading Investment Co., Ltd.
Changle Jieyuan Mental Surface Treatment Co., Ltd.
Chengdu Lituo Electronic Control Technology Co., Ltd.
Yulin Tianning Mining Service Co., Ltd.
Shandong Xinchuan Machinery Co., Ltd.
Shandong Mine Safety & Harm Avoidance Equipment Co., Ltd.
Beijing Sankuangtong Technology Co., Ltd.
Chengtu Forging Co., Ltd.
Shandong Mining Machinery Cosmec Construction Materials Machinery Co., Ltd.
