San-Ai Oil
 San-Ai Oil Co. Ltd. (三愛石油株式会社 San-Ai Sekiyu Kabushiki-gaisha) (TYO: 8097) is a Japanese corporation dealing in petroleum products aviation fuel storage and related services. Established in 1952 San-Ai has a capitalization of 10.1 billion yen.[citation needed] It is a member of the Ricoh San-Ai Group. Its headquarters are in Shinagawa Tokyo. In December 2004 San-Ai purchased Kygnus Oil from Tonen General Sekiyu and Nichimo which each owned 50% of Kygnus.[citation needed]