TOYO ENGINEERING INDIA PRIVATE LIMITED
TOYO ENGINEERING KOREA LIMITED
TOYO ENGINEERING & CONSTRUCTION SDN BHD
PT. INTI KARYA PERSADA TEHNIK
テックプロジェクトサービス株式会社
テック航空サービス株式会社
Toyo Engineering Korea Limited
Toyo Engineering Corpora
Toyo Engineering & Construction Sdn. Bhd.
PT. Inti Karya Persada Tehnik
Offshore Frontier Solutions Malaysia Sdn. Bhd.
Offshore Frontier Solutions Pte. Ltd.
Toyo U.S.A., Inc.
Estaleiros do Brasil Ltda.
Toyo Engineering India Private Limited
Toyo Engineering Canada Ltd.
Toyo Setal Empreendimentos Ltda.
Toy Engineering Europe, S.r.l社
Toyo Engineering India Limited
テックプロジェクトサービス（TPS）
TS Participações e Investimentos S.A.