Showa Chemical Industry Co., Ltd.

Showa Chemical Industry manufactures and sells diatomite and perlite filter aids under the Radiolite and Topco brand in China and Japan. Its diatomite and perlite filter aids are used to remove particulates from liquids and gases, as well as liquid filtration applications Functional additives for use in coatings, agricultural chemicals, and industrial products. Founded in 1930, Showa Chemical Industry is headquartered in Tokyo, Japan.