Rinko Corp. engages in the business of marine transportation services. It operates through the following segments: Transportation, Real Estate, Equipment Sales, Hotel, Product Sales, and Others. The Transportation segment engages in the harbor transportation, express transportation, warehousing, trucking transportation, ship anchorage, and shipping services. The Real Estate segment provides the leasing, sale and agency services of lands and buildings. The Equipment Sales segment engages in the sale of construction and office automation equipment. The Hotel segment engages in the planning and management of hotels, wedding events, parties, and dining halls. The Product Sales segment engages in the sale of cement products, imported daily necessities, and exported equipment. The Others segment provides non-life insurance agency and industrial waste disposal services. The company was founded on November 15, 1905 and is headquartered in Niigata, Japan.