Founded Taro Shoten in Nakano City in Showa 6.
Established as a charcoal wholesale business at Taro Shop, Nakano City.
Reorganized into Nakano Charcoal Co., Ltd. (Capital: 1 million yen)
Shifted from charcoal business to construction business. Changed company name to Nakano Industries Co., Ltd.
Changed the company name to Nakano Kogyo Co., Ltd. in Showa 35 (1960).
Increased capital to 4 million yen, laying the foundation for today.
Backed by strong business performance, increased capital threefold to 12 million yen.
Concluded quality agreement (Mitsubishi Heavy Industries, Ltd. Takasago Works)
Nakano Taro became chairman, and Nakano Tetsuro was promoted from managing director to president.
In July of the same year, increased capital 2.5 times to 30 million yen.
Concluded nuclear power construction quality agreement.
Applied for and received certification as a welding method approved factory by the Ministry of International Trade and Industry,
Permitted for specific construction business (civil engineering, architecture, piping, steel structures, machinery installation) from general construction business.
Established a work site at Kansai Electric Power Co., Inc. LNG management office.
President Nakano Tetsuro succeeded President Nakano Hiroaki.
Obtained ISO 9001 quality management system certification.
Designed, manufactured, and installed auxiliary equipment for nuclear and thermal power plants, registered and reviewed by the Power Plant Equipment Inspection Association.
Relocated the headquarters to Takasago Industrial Park and changed the company name to "Nakano Plants Co., Ltd." at the same time.
Relocated the Tsuruga branch to Wakas Branch in Mihama Town.
Established Kawasaki Office in Kawasaki City, Kanagawa Prefecture.
Closed Kawasaki Office.
Established Inspection Room.
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On August 24, 2026, high school students visited the Nakano Plants factory during a company visit bus tour. They toured the factory, and the site introduced processing equipment, materials, and the work of manufacturing.
On July 12, 2026, Nakano Plants Co., Ltd. took part in ‘Refresh Setouchi: River and Sea Cleanup Operation,’ organized by Takasago City. Everyone worked hard to collect litter around Takasago Seaside Park and Muko Island Park despite the intense heat.
Seventy-two safety and health posters drawn by the children and grandchildren of employees, including those of partner companies, were displayed at the head office and sales offices. This was the 10th year the posters had been solicited. As an annual event, the children’s artwork helps everyone renew their awareness of safety as they work.
Many runners took part in the 38th Mihama Itsuki Hiroshi Hometown Marathon, held in Mihama, Fukui, on May 10, 2026, making it a major local event. Many Nakano Plants employees joined the 5 km, 3 km, and walking categories, finishing happily amid warm encouragement from spectators. A customary barbecue after the race gave participants a chance to socialize.
An inspection department was established on April 1, 2026. A dedicated team has been formed to ensure the independence required for customers’ periodic inspections and strengthen quality assurance, enabling precise and reliable quality management.
Nakano Plants Co., Ltd. has been certified under Hyogo Prefecture’s newly established Hyogo Global Talent-Friendly Company program. There are 32 certified companies, including two in Takasago City. The certification recognizes companies that provide a work environment where foreign nationals can seek employment with confidence.
On March 9, 2026, Nakano Plants Co., Ltd. was certified as an Excellent Health Management Corporation (Small and Medium-Sized Corporation Category) for the seventh consecutive year. It was also selected for the Next Bright 1000 for the second consecutive year, recognizing its active efforts in employee health management. The company says it will continue supporting employee health and creating a workplace where people can work with energy and well-being.
On February 15, 2026, employees took part in the annual Hamakaze Ekiden. In fine weather, everyone gave their all to finish the race. Afterward, they held a barbecue on the company grounds and enjoyed time with colleagues and supporters, strengthening team bonds. They plan to take part again next year.
Eighty employees attended the party. Many met up in person for the first time in a while, and the atmosphere was warm and lively throughout. The event encouraged interaction across departments and communication between generations. As last year, a major raffle for valuable prizes brought excitement to the venue.