Production and sales of viscose staple fiber products. Sanyou Chemical refers to Tangshan Sanyou Chemical Co., Ltd. The company is the leader in the national soda ash (i.e. sodium carbonate) industry and the first domestically produced large-scale soda ash device model enterprise. Its main business in Europe is the production of exported viscose staple fiber products. and sales, the company has strong R&D strength. Nearly a hundred scientific and technological achievements have won awards at the provincial and municipal levels. Three technologies have obtained national patents. The self-developed "Ultra-low Salt Soda Ash for Automotive Glass" won the provincial new product award. "Low-salt soda ash" won the National New Product Award.