- 1961
- TOYO founded
- 1972
- International Procurement & Service Corporation (Currently Toyo Engineering Europe, S.r.l) established
- 1976
- Toyo Engineering India Limited established
- 1982
- TOYO was listed on the First Section of the Tokyo Stock Exchange
- 1986
-
Toyo U.S.A., Inc. established.
Toyo Engineering & Construction Sdn. Bhd. established in Malaysia
- 1987
-
Toyo Engineering Korea Limited established
TEC Project Services Corporation established
- 2009
-
TOYO formulated the Group MVV (Mission, Vision, Values).
- 2012
- TOYO invested in PT.Inti Karya Persafa Tehnik(IKPT) in Indonsia
TS Participações e Investimentos S.A. established.
- 2019
- Enactment TOYO group slogan "Your success, our Pride."
- 2020
- Enactment SDGs materiality
- 2021
- 60th anniversary of founding
New medium-term management plan (starting from FY2021 to 25)