Started onsite work as a subcontractor of Yahata Steel Works.
(Initially, the company was engaged in repair work on freight cars for in-yard transportation. Subsequently, the company received orders for contracted civil engineering and other work, including regular work in the production process.)*

Rented a factory in Ichieda, Tobata, from Yahata Steel Works and started operating the factory.
(In the beginning, the company manufactured daily necessities, agricultural machinery, buckets, and other sheet metal products.)

The company’s drum factory was completed in the Ichieda Plant, and the company made a full-scale entry into drum production.

Received special orders for drums from the U.S. military and became one of the nation’s leading drum manufacturers.

The Tokyo Liaison Office (currently the Tokyo Branch) was established.

Akiko Yamamoto became president.

The headquarters and plant were relocated to Tobata Ward’s Kawashiro 1-chome.

The Osaka Branch was opened.

Obtained approval for the Japanese Industrial Standard (JIS Z 1601 Class 1) for drums

Started onsite work (including billet-handling) at Kokura Works of Sumitomo Metal Industries, Ltd. (now Nippon Steel Corporation’s Kyushu Steel Works, Yahata Area).*

Delivered the first Dust Collector to the Kanda Cement Plant of Ube Industries, Ltd.

Absorbed Shin Kyokuto Kogyo and established the Dust Collector Division (now the Engineering Department).

Yuzo Yamamoto became president.

Established KYUSHU WHEEL KOGYO, Co., Ltd. as a joint venture with Topy Industries, Limited.*

Started onsite operations (Kanda Plant) for KYUSHU WHEEL KOGYO, Co., Ltd.*

With the widening of the Wakato Bridge, the company’s headquarters and plant were completely relocated to Yahatahigashi Ward’s Edamitsu to become a state-of-the-art (at that time) computer-controlled plant.

Received the first order for repair work from the Kanda Cement Plant of Ube Industries, Ltd.

Established an office in the Kyushu Plant of Mitsubishi Materials Corporation and entered the cement plant repair business at full scale.

Obtained ISO certification for its quality system
(ISO9002:1994, JIS Z 9902:1998; applies to the drum business at the headquarters plant).

Established the Plant Maintenance Department separately to undertake equipment maintenance for cement plants.

Took over the drum business from Sansei Container Manufacturing and established the Omuta Steel Drum Plant to expand the foundation of the drum business.

Delivered the Baghouse Dust Collector to the treatment facility for kiln exhaust gas at the Kumagaya Plant of Taiheiyo Cement Corporation.

Introduced helium-type airtightness inspection equipment for small cans at the headquarters plant. (Yamamoto Industries is the only company in Japan that uses this equipment for small cans.)

Introduced helium-type airtightness inspection equipment for 200L drums to the Omuta Steel Drum Plant.

The Representative Office Hanoi opened.*

Updated ISO 9001 (ISO 9001:2015 and JIS Q 9001:2015).

Acquired all shares of SUNTECHNO Co., Ltd. and made it a wholly owned subsidiary.

Yamamoto Industries, Ltd. and SUNTECHNO Co., Ltd. merged our business.