Kawaguchi Chemical Industry Co., Ltd. manufactures and sells fine chemicals primarily in Japan, with operations extending to Asia and other regions; the company produces organic rubber chemicals including vulcanization accelerators, antioxidants, curing agents and other rubber chemicals; plastic chemicals such as antioxidants and polymerization inhibitors; intermediates for dyes and pigments, pharmaceuticals and agrochemicals; photo chemicals; lubricant additives; and corrosion inhibitors, alongside involvement in real estate rental business. Founded in 1935 as Kawaguchi Chemical Laboratory and reorganized in 1937, it maintains headquarters in Chiyoda-ku, Tokyo, and employs approximately 160 people with production facilities including Kawaguchi and Kashima factories. The company recently raised its fiscal year-end lump-sum dividend forecast to 60 yen from 50 yen for the November 2025 period to enhance shareholder returns amid solid medium- to long-term growth strategies, while prioritizing expansion into high-performance materials for medical, semiconductor and electronics sectors beyond traditional rubber chemicals.