SAN-AI OIL CO., LTD. is a Japan-based company principally engaged in the sale of petroleum products, liquefied petroleum (LP) gas, as well as the storage and refueling of aircraft fuel. The Company operates in three business segments. Petroleum-Related Business segment sells, stores and ships petroleum products and manufactures and sells chemical products such as preservatives, fungicides and extinguishing agents. Gas-Related Business segment sells LP gas, natural gas, city gas and gas equipment. Aviation Related Business & Others segment is involved in the storage and refueling of aircraft fuel, the surface treatment of metal, the contract construction of building ancillary facilities and the rental of real estate. The Company is also involved in the sale of energy-saving equipment and business related to power generation and sales.