Sumitomo Mitsui Construction is a construction company that specializes in the design, engineering, and construction of skyscrapers and high-rise buildings.
DAI-DAN (ダイダン株式会社) is an integrated systems company that designs and manufactures electrical, air conditioning, plumbing and sanitary, and fire protection facilities.
Shanghai Zhenhua Heavy Industries (上海振华重工, ZPMC) is a company that manufactures cranes, large steel structures, off-shore heavy industries, and special engineering vessels.
Kawada Technologies is a construction engineering company that operates Steel Construction, Civil Engineering, Architecture, and Other business segments.