Shenzhen Taiqi Technology Co. Ltd.
North American Holding Corp.
Zhejiang Jiangneng Construction Co. Ltd.
Guangzhou Zhongwei Education Technology Co., Ltd.Guangdong Sheng, China
Chengdu Xinzhi Industry Co. Ltd.
Shenzhen Songji Button Products Co., Ltd.
cangzhou normal universityHebei Sheng, China
Nord-Lock International ABSweden
Mianyang Normal University
Shenzhen Jiaoguan Technology Industry Co., Ltd.Guangdong Sheng, China
Union Metals Co. Ltd.
Mudanjiang Petroleum Tools Co. Ltd.