1989 - IDEMITSU NAGAHORI BUILDING, THE FIRST HIGH-RISE BUILDING BUILT ATOP A SERVICE STATION, COMPLETED. METHOD OF DECIDING PETROLEUM PRODUCT PRICES ON A MONTHLY BASIS BEGINS. IDEMITSU OIL & GAS CO., LTD. ESTABLISHED
Alkylation unit completed at Aichi Refinery. Idemitsu New Gold Apollo Gasoline introduced
