
Furukawa Group formerly Furukawa zaibatsu (古河財閥) is one of Japan's 15 largest industrial groups. Its origins date back to 1875, founder Furukawa Ichibei. This group specialized in mining, electronics, and chemicals industry before World War II. Now, the predominant companies are Fuji Electric and Furukawa Electric as well as Fujitsu, FANUC, and Advantest. Other well-known companies include Yokohama Rubber.

Asahi Mutual Life Insurance Company is a Japanese insurance company, headquartered in Tokyo. The company was founded in 1888 and is, today, one of the oldest and largest insurers in Japan.

FANUC is a Japanese group of companies that provide automation products and services such as robotics and computer numerical control wireless systems. These companies are principally FANUC Corporation of Japan, Fanuc America Corporation of Rochester Hills, Michigan, USA, and FANUC Europe Corporation S.A. of Luxembourg.

Fuji Electric Co., Ltd. , operating under the brand name FE, is a Japanese electrical equipment company, manufacturing pressure transmitters, flowmeters, gas analyzers, controllers, inverters, pumps, generators, ICs, motors, and power equipment.
Fujitsu Limited is a Japanese multinational information technology equipment and services company headquartered in Tokyo. In 2018, it was the world's fourth-largest IT services provider measured by global IT services revenue. Fortune named Fujitsu as one of the world's most admired companies and a Global 500 company.
Mizuho Bank, Ltd. is the integrated retail and corporate banking unit of Mizuho Financial Group, the third largest financial services companies in Japan, with total assets of approximately $1.8 trillion in 2017. Mizuho is one of the three so-called Japanese "megabanks". Mizuho Bank provides financial products and services to a wide range of clients, including individuals, small and medium-sized enterprises, large corporations, financial institutions and public sector entities. Its headquarters office building is located in the Otemachi district of Chiyoda, Tokyo.

Sompo Holdings, Inc. , formerly NKSJ Holdings and Sompo Japan , is a Japanese insurance company. It is the second-largest property insurance company in Japan only behind Tokio Marine, with market share of 19.3% in 2007.

The Yokohama Rubber Company, Limited is a tire company based in Tokyo, Japan. The company was founded and began on October 13, 1917, in a joint venture between Yokohama Cable Manufacturing and B.F. Goodrich. In 1969, the company expanded to the United States as Yokohama Tire Corporation. The Aspec A300 was the driving force behind its tremendous rise. Branding, especially in Japan, will often use "ADVAN" instead of Yokohama. ADVAN wheels and tires have a strong presence in the aftermarket scene worldwide.