CMOC or CMOC Group Limited, previously known as China Molybdenum Company Limited, is a Chinese partly state-owned mining company. It is listed on the Hong Kong Stock Exchange and Shanghai Stock Exchange. The company is the world's largest cobalt producer and controls approximately one third of global supply. The company's headquarters are located in Luanchuan County, close to the city of Luoyang City in Henan. As of 2022, they are ranked 74th in the Fortune China Top 500. Wikipedia