Seiko Chemical

Seiko Chemical Co., Ltd. is a Japanese specialty chemical manufacturer established in 1948 and headquartered in Tokyo. The company specializes in the production of rubber chemicals, plastic additives, and fine chemicals, with a significant focus on pharmaceutical and agrochemical intermediates. They provide contract manufacturing services (CMO) leveraging expertise in complex organic synthesis, including sulfur chemistry and high-pressure reactions. Seiko Chemical operates multiple manufacturing facilities in Japan, including the Kuki and Fukushima plants, to serve global markets. Their product portfolio includes antioxidants, vulcanization accelerators, and various specialty additives used in industrial and life science applications.