Sankoh Colloid Chemical Co., Ltd. was established on October 1, 1968, as Sankoh Colloid Limited Partnership. It built a factory at its current location and manufactures and sells textile-related products such as dyeing auxiliaries, textile oils, and textile finishing agents. In 1970, it expanded into civil engineering chemicals, including concrete admixtures and foaming agents for air mortars, and now its main product is liquid injection agents (grouts) among civil engineering chemicals. These products are used in the construction of social infrastructure such as water supply and drainage systems, subways, and roads. The sales targets are throughout Japan and the Southeast Asian region. (ISO 9001 certification obtained in 1998)