Baiyin Nonferrous Group Co., Ltd., also known as BNMC, is a major Chinese state-owned enterprise involved in the mining, smelting, and processing of nonferrous metals, including copper, lead, zinc, silver, and gold. Headquartered in Baiyin, Gansu Province, the company is a key player in China's nonferrous metals industry and has significantly expanded its global footprint in recent years. Wikipedia