Yoshitsugu Ota

Toyo Denka Kogyo Co. Ltd. manufactures and markets metal additives for cast iron products and chemical products. The firm manufactures specialty alloy, derivatives from ferro-alloy, serpentine, quicklime, calcium carbide and carbonate and tricalcium phosphate. The company was founded on April 8, 1919 and is headquartered in Kochi, Japan.

Meiji Yasuda Life Insurance Co. is engaged in the provision of life insurance services. Its business activities include individual insurance marketing, general agent marketing, group insurance marketing, underwriting, policyholder services, claim payments, asset management and international insurance services. The company was founded on July 9, 1881 and is headquartered in Tokyo, Japan.

Part of Meiji Yasuda Life Insurance Co., Meiji Yasuda Building Management KK leases real estate properties and provides property management services. The company is based in Hiroshima, Japan.

Part of Giken Ltd., Giken Seko Co., Ltd. is a Japanese construction company that specializes in the pressure-in construction method. The company is based in Kochi, Japan. The company pushs piles into the ground with high accuracy without generating vibration or noise. The company offers various system equipment options to suit different construction purposes and on-site environments. The company aims to revolutionize the construction industry with their new technologies and techniques that realize efficient and rational pile construction under various conditions.