Contractor and supplier for public works such as river, ground and road improvement, maintenance, and management. Supplier for civil engineering projects.

　Produces high-grade macadam aggregate, gravel, and various types and sizes of rocks.

　Manufactures ready-mix concrete and supplies cement and concrete products.

　Develops and manages the manufacture and sales of new gardening products, de-icing salt and calcium chloride.

　Manufacturer, contractor and supplier of structural steel product.

　Supplies a variety of building and construction materials, and contracts special works.

　Constructs and supplies a variety of window products for private housing and commercial facilities and multistoried buildings.