Yan'an Vocational and Technical College
Dujiangyan City Golden Shield Protective Equipment Co., Ltd.
Shenzhen Guanqiang Powder Metallurgy Products Co., Ltd.
Xuancheng Chuangdao Intelligent Technology Development Co., Ltd.
Hammarprodukter AB
Chengdu Chuanya Wood Industry Co. Ltd.
E&C Ltd.
Wuhan Guoce Hengtong Intelligent Instrument Co. Ltd.
Zhangjiagang Beishun Rubber Product Co. Ltd.
Hangzhou Hua Haitian Technology Co., Ltd.Zhejiang Sheng, China
Bengbu Ruifeng Purification Equipment Engineering Co., Ltd.Anhui Sheng, China
Coburn Optical Industries, Inc.