GS E&C (formerly known as Lucky Development) is an EPC (engineering, procurement, and construction) contractor specializing in architecture, civil engineering, petrochemical, and power plants construction activities.
Mitsui E&S Holdings (株式会社三井E&Sホールディングス, formerly Mitsui Engineering & Shipbuilding) is an engineering company engaged in energy, marine logistics, and industrial infrastructure businesses.
MIRAIT ONE (株式会社ミライト・ワン, formerly known as MIRAIT Holdings) is an engineering and services company primarily engaged in information technology and telecommunications.