Toray Industrial Co., Ltd. was established in Japan Bridge in the central area of Tokyo, Japan. It is a large-scale chemical enterprise that started with synthetic fibers and synthetic resins and now covers various chemicals and information-related materials. The company slogan is "InnovationbyChemistry" (chemistry leads innovation and creation).

Toray Co., Ltd. was established in 1926, and its headquarters is in Tokyo, Japan. Toray Group is a world-famous high-tech multinational enterprise with organic synthesis, polymer chemistry and biochemistry as its core technologies. There are 200 affiliated companies in 19 countries and regions around the world, with annual sales exceeding1200 million USD. It has 35,000 employees. Toray is one of the earliest enterprises engaged in the development of reverse osmosis membrane technology in the world. As early as the 1960s, the research on membrane technology began, which made outstanding contributions to the application and development of this technology in water treatment fields such as ultra-pure water and seawater desalination, from the selection of raw materials, the development of membrane technology and the design of membrane modules. Now Dongli has become one of the few manufacturers in the world that can provide both acetate fiber membrane and polyamide composite membrane. At the same time, Toray is also the only membrane manufacturer in the world that has developed RO, NF, UF, MF and fiber filter cloth series membrane technology and provided a full range of commercial membrane products to the market.