On September 11, 2018, He Li, Vice Governor of Guizhou Province, Lu Chengjun, Vice Mayor of Zunyi City, Feng Guangcai, Director of Southern Zone of Zunyi City, and Zhongplatinum Cemented Carbide Co., Ltd.

On September 11, 2018, He Li, Vice Governor of Guizhou Province, Lu Chengjun, Vice Mayor of Zunyi City, Feng Guangcai, Director of Southern Zone of Zunyi City, and Zhongplatinum Cemented Carbide Co., Ltd.

On September 11, 2018, He Li, Vice Governor of Guizhou Province, Lu Chengjun, Vice Mayor of Zunyi City, Feng Guangcai, Director of Southern Zone of Zunyi City, and Zhongplatinum Cemented Carbide Co., Ltd.