General Projects: Stone processing for construction; Sales of construction materials; Sales of asbestos-cement products; Landscape gardening and construction projects; Earthwork and rockfill construction projects; Sales of decorative building materials; Sales of metal ores; Sales of synthetic materials; Sales of non-metallic minerals and products; Sales of bearings; Production of bearing steel products; Manufacturing of decorative building materials, plumbing and heating pipe fittings, and other building metal products; Engineering management services; Retail of hardware products; Sales of daily necessities; Quality inspection of forestry and grass seed; Sales of electric power dynamo-meters. (Except as otherwise required by law, the company operates independently and autonomously in accordance with the business license.)