Xinjiang Zhongtai Chemical Co., Ltd. manufactures and sells chemicals under the Feng brand name in China. The company offers polyvinyl chloride products, ion-exchange membrane caustic soda, viscose fiber, viscose yarn, blue carbon, calcium carbide, and calcium carbide slag to make cement, cotton pulp, and other circular economy industrial chains. It also exports its products. The company was founded in 2011 and is based in Ürümqi, China.