Katsumi Nagata

Part of Kumiai Chemical Industry Co., Ltd., Chubu Riken KK operates as a golf club.

Part of Kumiai Chemical Industry Co., Ltd., Riken Maintenance Co., Ltd. is a maintenance company based in Shizuoka, JP. Riken Maintenance Co. has several branches located in different areas of Japan. The Japanese company provides various services such as car maintenance, inspection, and repair. The company also offers machinery and equipment maintenance services.