Mitsuru Watanabe

Part of Sumitomo Riko Co. Ltd., Tokai Rubber (Tianjin) Co., Ltd. is a carbon maker that focuses on useful technology for people, society, and the earth. The company is based in Jinnan, China. The Chinese company supports the richness of everyday life and fulfills its social responsibilities. Tokai Carbon's carbon black business introduces the strengths of the company, including carbon black raw materials, manufacturing processes, sales, and customers. The company leads the world with products such as carbon black, graphite electrode, fine carbon, frictional and sliding materials, industrial furnace, and related products.

Part of Sumitomo Riko Co. Ltd., Tokai Rubber (Jiaxing) Co., Ltd. is a Chinese company that manufactures rubber seals. The company is based in Jiaxing, China.