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China Sinochem Group Co., Ltd.

China Hualu Engineering Company

Guiyang Aluminum Magnesium Design & Research Institute Co., Ltd.

Sai Ding Engineering Co., Ltd.

China Enfi Engineering Technology Co., Ltd.

China Tianchen Engineering Co., Ltd.

China State Shipbuilding Corporation Lim

China Aerospace Science and Technology Corporation

SINOPEC

China National Petroleum Corporation

CNOOC

Western Mining Co., Ltd. Zinc Industry Branch

Kaifeng Pingmei New Carbon Material Technology Co., Ltd.

Jinchuan Group Co., Ltd.

Shenzhen Zhongjin Lingnan Nonferrous Metals Co., Ltd. Danxia Smelter

Yuntianhua Group Co., Ltd.