Formerly the construction division of Yokogawa Bridge, this company is Japan's leading steel bridge construction firm. In addition to bridges, the company also designs and builds a variety of steel structures, including steel towers and frames. One more activity is the acquisition, development and sale of patents, computer software and other knowledge-based assets. Tetra is Japan's largest manufacturer of blocks for protection shorelines and harbors from waves. The company manufactures and installs these blocks.
Strengths extend to inland civil engineering projects and work to improve scenery.
One more source of earnings is the rental of concrete forms. One focus of research and development is techniques for protecting harbors and shorelines from waves. A full-line general contractor, Komatsu Construction has close ties with the construction equipment maker of the same name. Based in Tokyo, Komatsu Construction is active throughout Japan. Next Construction List Select the first letter of the company or select an industry.