GuoCheng Mining CO., Ltd. engages in the mining of nonferrous and ferrous metals. The company's products include zinc concentrates, lead concentrates, copper concentrates, and sulfur concentrates, as well as pyrite powders, industrial sulfuric acid, and secondary iron concentrates. It also engages in the trading of non-ferrous metal mineral products; and precious and rare metals, such as gold and silver products. The company was formerly known as Jianxin Mining Co., Ltd. and changed its name to GuoCheng Mining Co., Ltd. in August 2018. The company is based in Chengdu, China.