Cathay Biotech Inc., together with its subsidiaries, engages in the research, development, production, and sale of bio-based materials in China and internationally. The company offers biological long-chain diacids, including sebacic acid and octadecanedioic acid; bio-based polyamides; and bio-based pentamethylene diamine under the TERRYL and ECOPENT brands. It also provides digital solutions for electrification, automation, and digitization for biological manufacturing. The company's products are used in textiles, pharmaceuticals, perfumes, automobiles, electronic appliances, consumer goods, engineering materials, and other industries. It exports its products. The company was incorporated in 2000 and is headquartered in Shanghai, China.