Kono Construction Co., Ltd.

Founded in 1949 during the postwar recovery period in Oita Prefecture.

Our company was established in 1949 in Oita Prefecture during the post-war reconstruction period. From the beginning, we have operated with the motto of "a company that can contribute to the local community," handling construction materials and other supplies for social infrastructure development and construction demand. For more than 70 years since then, while engaging in the steel and construction businesses, we have established a nationwide logistics network and iron processing capabilities, continuing to grow together with the local community.

Started as a building materials wholesale business. Founded in 1926 (Taisho 15). Began as a fastener merchant selling corrugated sheets and cement, and later established to sell cement, fasteners, and civil engineering construction materials based on long-term performance and trust. Capital was 1 million yen. Contributed to housing construction and overall postwar recovery.

Established Kono Construction Materials Co., Ltd. in Oita City, Oita Prefecture, starting as a building materials wholesale business.

Started selling construction machinery.

Changed the company name to Kono Construction Co., Ltd.

In the early 1950s, opened a branch in Kokura, Kitakyushu, and began selling steel products in response to rising steel demand. Handled finished goods and small orders, building trust.

Opened the Kokura branch and intensified steel product sales.

Opened the Kumamoto branch.

Opening of Hiroshima branch.

Opened the Fukuoka sales office (now Fukuoka branch).

Opened the Nagasaki sales office (now Nagasaki branch).

Expanded into Osaka, using Taiwan and China as footholds to build overseas networks in Eastern Europe, Australia, and South America. Procured steel from domestic and international sources, with over 2,500 suppliers.

Opened the Osaka sales office (now Osaka branch).

Registered shares on the open market with the Japan Securities Association.

Established the Tokyo office (now Tokyo branch).

Listed on the Osaka Stock Exchange and Fukuoka Stock Exchange.

Made Nishinippon Steel Center Co., Ltd. a consolidated subsidiary.

Listed on the Second Section of the Tokyo Stock Exchange.

Established the Okinawa office (now Ono Kensei Okinawa Co., Ltd.).

Designated as a First Section company on the Tokyo Stock Exchange.

Established the Sendai office (now Sendai branch).

Made Yokohama Steel Co., Ltd. (Osaka City) a consolidated subsidiary.

Made Sankyo Nori Steel Co., Ltd. (now Osaka Prefecture, Sakai City) a consolidated subsidiary.

Established Ono Kensei Okinawa Co., Ltd.

Expanded processing equipment for steel products and performed primary processing in-house, improving customer efficiency. Will continue to establish new logistics centers and introduce processing machinery.

The fourth turning point: expanded processing facilities for steel products to further improve convenience.

Made Morita Steel Co., Ltd. a subsidiary.

Transitioned to the Prime Market of the Tokyo Stock Exchange.

Made Yamasa Co., Ltd. a consolidated subsidiary.

Made Kōnen Steel Co., Ltd. (now Ono Kensei Steel Co., Ltd.) a consolidated subsidiary.

Acquired the steel wholesale business and began operations.

Acquired steel wholesale business and started business with Ohbayashi Trading Co., Ltd.

Made Matsuo Metal Co., Ltd. a subsidiary.

Made Chūō Steel Co., Ltd. a subsidiary.

Made Marumi Kōshō Co., Ltd. a subsidiary.

Acquired steel wholesale and steel frame construction business and established the Mino office.

Mitsuyo Steel Co., Ltd. was consolidated as a subsidiary.