Message from the President

Creating a prosperous future. We challenge, we strive, and we are grateful.

Since its establishment in 1973, Sakamoto Sangyo Co., Ltd. has grown along with the development of the world as a trading company specializing in Construction Machinery.

We provide safe and reliable machinery for disaster recovery and reconstruction, disaster prevention-related construction, construction of public facilities, urban redevelopment, and other work to improve social infrastructure and create a comfortable environment.

In terms of service, we value the trust and connections we have cultivated over nearly half a century since our founding, and promise to provide consistent service from new and used car sales, domestic and international rentals, after-sales service at our own maintenance facilities, and overseas import and export sales, from new cars to the life of the machines.

We will continue to challenge ourselves without fear of failure, always thinking about how we can answer “YES” to the diversifying needs of our customers.

We will continue to contribute to the creation of a prosperous future by taking on the challenges of the new era and striving to overcome difficulties. We would like to express our heartfelt gratitude to everyone who supports and cooperates with us, and to the environment that surrounds us.

We look forward to your continued guidance and encouragement.

Managing Director Yousuke yamamoto

About Us

Company Name
Yosuke Yamamoto
No. 22-5, Oji 2-chome, Kita-ku, Tokyo 114-0002, JAPAN Google Map
TEL: +81-3-3913-4357/FAX: +81-3-3919-2212
Service factory
No.718-2, Naganuma, Kasukabe-shi Saitama 344-0123, JAPAN Google Map
TEL: +81+48-747-1888/FAX: +81-48-747-1877
Capital stock
60,000,000 yen
Business Description
Sales, Purchase, Rental, and Maintenance of Construction Machinery
Secondhand dealer license number
305537501813 Approved by the Tokyo Metropolitan Public Safety Commission
Main banks
Bank of Tokyo-Mitsubishi UFJ, Oji Ekimae Branch
Sugamo Shinkin Bank, Oji Branch
Mizuho Bank Ikebukuro Higashiguchi Branch
Sumitomo Mitsui Banking Corporation, Akabane Branch
affiliated company
R&B Engineering Co., Ltd.
No. 22-5, Oji 2-chome, Kita-ku, Tokyo 114-0002, JAPAN
TEL: +81-3-3919-2218 & 2060/FAX: +81-3-3919-2212

Shizuoka Factory and Branch
No. 716-1 Nagasaki, Shimizu-ku, Shizuoka-shi, Shizuoka 424-0065, JAPAN
TEL: +81-54-346-7211/FAX: +81-54-346-8686



Service factory

Company History

1973.9 Founded at No.5-6, Toshima 5-chome, Kita-ku, Tokyo
1973 Entered into a distributorship agreement with Shinsho Corporation (Kobelco Construction Machinery Co., Ltd. today)
1973.12 Established Sakamoto Sangyo Co., Ltd. (capital : 5 million yen)
Masatake Sakamoto becomes Managing Director.
1974.06 Head Office moved to No. 30-2, Oji 1-chome, Kita-ku, Tokyo (Dai-ichi Marukyu Building)
1975.9 Increased capital to 10 million yen.
1979.7 Service factory established in Iriya, Adachi-ku, Tokyo.
1981.7 Service factory moved to No. 681, Oaza Takahata, Urawa-shi (Midori-ku, Saitama-shi today), Saitama.
1982.5 100% subsidiary, AR&BE CORPORATION, established
1983 Service factory accredited as a designated repair factory of KOBELCO CONSTRUCTION MACHINERY Co., Ltd.
1986.8 The First SAKAMOTO Building completed. Head office moved to No. 19-15, Oji 1-chome, Kita-ku, Tokyo (The 1st SAKAMOTO Building).
1987.6 Increased capital to 20 million yen.
1990.9 The Second SAKAMOTO Building completed.  Started Hotel Business at No. 18-5, Oji 1-chome, Kita-ku Tokyo (The 2nd SAKAMOTO Building).
1994.1 Increased capital to 30 million yen.
1995.2 The Third SAKAMOTO Building completed. Head office moved to No. 22-5 Oji 2-chome, Kita-ku, Tokyo (The 3rd SAKAMOTO Building).
1998.6 Increased capital to 60 million yen.
2007.10 R&B Engineering Co., Ltd., as a mini-crane manufacturer, established (jointly with subsidiary AR&BE Corporation).
2007.12 Started domestic sales and rental of new cart-cranes manufactured by R&B Engineering Co., Ltd.
2008.4 Service factory moved to No. 718-2, Naganuma, Kasukabe-shi, Saitama.
2011.7 Subsidiary AR&BE Corporation merged with R&B Engineering Co., Ltd. and changed the company name to R&B Engineering Co. Ltd.
2020.2 Masatake Sakamoto becomes Senior Advisor
Yosuke Yamamoto becomes Managing Director.