| February 1960 |
Kurihara Spring Industry Co., Ltd. was established in Hasuda, Saitama Prefecture |
| November 1965 |
Nanshin Hatsujo was established in Suwa, Nagano Prefecture |
| June 1966 |
Nanshin Hatsujo was reorganized as Nanshin Hatsujo Co., Ltd. |
| March 1972 |
Kanesan Manufacturing Co., Ltd. was established |
| October 1975 |
Syoshin Precision was established in Iida, Nagano Prefecture |
| May 1986 |
Syoshin Precision was reorganized as Syoshin Precision Co., Ltd. |
| July 1986 |
Nanshin Hatsujo Co., Ltd. changed its name to Nampax Co., Ltd. |
| November 2000 |
Kurihara Spring Industry Co., Ltd. and Nampax Co., Ltd. merged to establish “Kuramoto High-Tech Co., Ltd.” |
| August 2001 |
New factory completed due to reconstruction of Suwa Factory |
| November 2004 |
Kuramoto High-Tech Co., Ltd., Syoshin Precision Co., Ltd., and Kanesan Manufacturing Co., Ltd. merge to form “LADVIK Co., Ltd.” |
| August 2009 |
Two factories in Suwa City (Nakasu and Akanuma factories) are integrated to form the “Suwa Factory” |
| October 2010 |
Subsidiary LADVIK (THAILAND) Co., Ltd. is established in the Kingdom of Thailand |
| January 2012 |
The “Suwa Factory” is renamed “Suwa No. 1 Factory”, and the “Saitama Factory” is closed and relocated to Suwa City as the “Suwa No. 2 Factory” |
| July 2013 |
Head office is relocated from Hasuda City, Saitama Prefecture to Chiyoda Ward, Tokyo |
| September 2014 |
Becomes a subsidiary of Yamashina Co., Ltd. (now Wise Holdings Co., Ltd.) |
| September 2017 |
“Nagoya Office” is opened in Nagoya City |
| October 2017 |
Increased capital to 301 million yen and started sales of chemical products (foamed and reinforced plastic products) |
| February 2018 |
Opened the "Osaka Office" in Osaka City |
| December 2019 |
Opened the "Iida (Kawaji) Factory" in Iida City, and renamed the previous Iida Factory to the "Iida (Tatsue) Factory" |
| November 2023 |
Merged two factories in Iida City (Tatsue and Kawaji Factory) into the "Iida Factory" |
| January 2024 |
Opened the "Omiya Office" in Saitama City |
| August 2024 |
Relocated head office from Chiyoda Ward, Tokyo to Suwa City, Nagano Prefecture |
