China Sanjiang Fine Chemicals Company Limited (CNSJF) is an investment holding company primarily engaged in the manufacture and supply of ethylene oxide, ethylene glycol, polypropylene, surfactants, and related chemical products; it provides processing services for polypropylene, methyl tert-butyl ether, and surfactants, as well as lease, storage, and asset management services. The company produces core components such as ethylene oxide and AEO surfactants for household cleansing agents including liquid detergents, cosmetics, and ointments; additional offerings encompass methyl tert-butyl ether/carbon four, pentene, water reducing agents, liquefied petroleum gas, and industrial gases like oxygen, nitrogen, and argon. Founded in 2003 and headquartered in Jiaxing Port Area, Zhejiang Province, People's Republic of China, with production facilities in Jiaxing and Xiaoshan boasting aggregate annual capacities of approximately 330,000 metric tons for ethylene oxide and 218,000 metric tons for surfactants, it operates principally in the domestic Chinese market with some overseas reach through its vertically integrated production processes. In a significant recent development, the company commenced an equity buyback plan in September 2025, authorized at its annual general meeting on May 30, 2025, to repurchase up to 10% of its issued share capital or 119 million shares to enhance net asset value and earnings per share; this follows positive 2024 financial results with a 10.3% EBITDA margin in the second half despite petrochemical cycle challenges.