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3-7-1, Nishi-shinjuku, Shinjuku-ku
Description: Toa Corporation is an international marine contractor with headquarters in Tokyo and offices and subsidiaries in eight other countries. Toa performs a wide variety of marine projects, including dredging using its Toa’s dredging system Integrated High Density Sludge Removing Impeller System (IRIS), an environmentally friendly system that prevents eutrophication that causes pollution of lakes, swamps and inner bays. The company's experienced staff, and engineering and design skills have been applied to harbor construction, artificial islands, underwater cable installation, shore and bed protection, bridge piers and beach erosion control.
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