Denka Company Limited (Denka) was established in 1915 for the production of calcium carbide and chemical fertilizers by utili ... zing abundant limestone resources and its in-house electric power plants. Since then, we have grown to become a unique chemicals manufacturer involved in the production and distribution of a wide range of chemical products from inorganic and organic materials to electronic materials and processed resin products. These materials are based on our proprietary technologies of electric furnace controls, high-temperature reaction controls, organic synthesis and others nurtured over long years of experience in the field of calcium carbide chemicals business. read more