| 1978 |
Entered the bridge civil engineering metal sandwich panel market |
| 1983 |
Established Nissho Industrial Co., Ltd. |
| 1983-09 |
September 1983 (Showa 58). |
| 1983-09 |
Establishment. |
| 1991 |
Started roll forming processing |
| 1991 |
Opened Shime factory in Shime-machi, Sōya-gun, Fukuoka Prefecture (closed December 1999) |
| 1993 |
Entered the livestock industry |
| 1997 |
Organizational change to Nissho Industrial Co., Ltd.; relocated Yamada factory to Kami-Yamada, Yamada City (now Kagami City), Fukuoka Prefecture |
| 1997 |
Organizational change to Nissho Industrial Co., Ltd., and relocated Yamada plant to Kamiyamada, Yamada City (now Kama City), Fukuoka Prefecture. |
| 1999 |
Started custom processing; entered cleanroom industry; expanded roll forming lineup; added second building to Yamada factory |
| 1999 |
Started custom processing, entered the cleanroom industry, and expanded roll molding processing lineup. |
| 2000 |
Obtained ISO9001 certification; added third building to Yamada factory; added fourth building to Yamada factory |
| 2000 |
Started canned sheet metal processing, entered the plant industry, and obtained ISO9001 certification. |
| 2005 |
Started laser processing |
| 2007 |
Added fifth building to Yamada factory; changed company name to Nissho Pronity Co., Ltd.; listed shares on the Q-Board market of the Fukuoka Stock Exchange |
| 2007 |
Expanded Yamada plant with a fifth building, changed the name to Nissho Pronity Co., Ltd., and listed shares on the Fukuoka Stock Exchange Q-Board market. |
| 2008 |
Commenced production of metal sandwich panels |
| 2010 |
Commenced production of industrial solar cell array support frames; entered environmental energy industry; expanded exterior material lineup; entered parking lot industry |
| 2010 |
Started production of industrial solar cell array support frames, entered the environmental energy industry, expanded exterior material lineup, and entered the parking lot industry. |
| 2011 |
Opened Tokyo branch; opened Osaka branch (closed November 2018) |
| 2011 |
Opened Tokyo and Osaka offices (later closed). |
| 2012 |
Obtained Minister of Land, Infrastructure, Transport and Tourism certification for fire-resistant panels |
| 2013 |
Opened Sendai branch (closed February 2016) |
| 2013 |
Opened Sendai office (later closed). |
| 2014 |
Opened Fukushima factory |
| 2016 |
Started M&A and group management; merged with Gubun Rubber Industrial Co., Ltd. via M&A; established Nissho Engineering Co., Ltd.; added second building to Yamada factory |
| 2016 |
Started M&A and group management, acquired Gubun Rubber Industry Co., Ltd. through M&A, established Nissho Engineering Co., Ltd., and strengthened flat steel processing. |
| 2017 |
Acquired Ayame Seiki Co., Ltd. through M&A and incorporated into the group. |
| 2017 |
Acquired Ayame Seiki Co., Ltd. through M&A and started processing of main roof ridge frames. |
| 2018 |
Acquired Dairitsu Co., Ltd. through M&A and incorporated into the group. |
| 2018 |
Acquired Dairitsu Co., Ltd. through M&A and sold shares in 2026. |
| 2019 |
Listed on the Second Section of the Tokyo Stock Exchange and changed market to the Main Market of the Fukuoka Stock Exchange. |
| 2019 |
Listed on the Second Section of the Tokyo Stock Exchange and changed market to the Main Market of the Fukuoka Stock Exchange. |
| 2020 |
Relocated headquarters within Nishi-ku, Fukuoka City. |
| 2022 |
Expanded Fukushima plant with a second building and acquired Ikai Co., Ltd. through M&A. |
| 2022 |
Expanded the second building at the Fukushima plant, acquired Ikkai Co., Ltd. through M&A, entered the metal sandwich panel market for bridge civil engineering, and transitioned from the Tokyo Stock Exchange Second Section to the Standard Market following the market reorganization. |
| 2023 |
Acquired Watanabe Techno Co., Ltd., Nittai Industrial Co., Ltd., and Tenjin Manufacturing Co., Ltd. through M&A, established Kanaete Co., Ltd. (now a consolidated subsidiary), and Kanaete Co., Ltd. acquired the business of Japonline Co., Ltd. |
| 2023 |
Grouped Watanabe TechnoS Co., Ltd., Nittai Industrial Co., Ltd., and Tenjin Manufacturing Co., Ltd. through M&A, established Kanaete Co., Ltd. (now a consolidated subsidiary), and Kanaete Co., Ltd. acquired the business of Japonline Co., Ltd. |
| 2024 |
Acquired Marutku Co., Ltd., Shikifani Chia Co., Ltd., and Daioh Co., Ltd. through M&A, merged with Nissho Engineering Co., Ltd., and transitioned from the Second Section to the Standard Market of the Tokyo Stock Exchange following market reorganization. |
| 2024 |
Merged with Nissho Engineering Co., Ltd., and grouped Maltuk Co., Ltd., Shikifani Chia Co., Ltd., and Daioh Co., Ltd. through M&A. |
| 2025 |
Transitioned to a holding company structure. Nissho Pronity Co., Ltd. changed its name to Nissho Group Co., Ltd. and transferred its metal processing business to the operating company Nissho Pronity Co., Ltd. Acquired Izumi Manufacturing Co., Ltd. and Anai Construction Co., Ltd. through M&A. |
| 2025 |
Transitioned to a holding company structure; Nissho Pronity Co., Ltd. changed its name to Nissho Group Co., Ltd.; transferred the metal processing business to the business company Nissho Pronity Co., Ltd.; and grouped Izumi Manufacturing Co., Ltd. and Anai Construction Co., Ltd. through M&A. |
