Ko Yo Chemical (Group) Limited, an investment holding company, engages in the research and development, manufacture, marketing, and distribution of chemical products and chemical fertilizers in the People's Republic of China. The company offers bulk blended fertilizer, urea, soda ash, and ammonia chloride, as well as methanol, N-methylpyrrolidone, and N,N-dimethylformamide. It also provides agrotechnical services, including seeds selection, soil testing, fertilizing, field management, and prevention and control of diseases and pests to farmers under the Jiu Yuan Ce Fang brand. In addition, the company is involved in the exploration and exploitation of a phosphorous mine; production of phosphoric acid and propylene oxide; and manufacture and sale of engineering plastics. Ko Yo Chemical (Group) Limited was incorporated in 2002 and is headquartered in Causeway Bay, Hong Kong.