SAN-AI OIL CO., LTD. is a Japan-based company engaged in the provision of petroleum products. The Company operates in three business segments. The Petroleum segment provides petroleum products, such as benzine, kerosene, light oil and heavy oil, as well as automobile related products, such as car wash waxes and water repellent coats. This segment is also involved in the production and sale of chemical products, as well as the tank location management and the petroleum product delivery businesses. The Gas segment is engaged in the sale of liquefied petroleum gas (LPG) and gas appliances, as well as the delivery and filling of LPG and the supply of urban gases. The Aviation-related and Others segment is involved in the aircraft fuel storage business and the airline refueling business, as well as the construction and design of construction works, the building management and the provision of non-life insurance services.