The storage period of X.O is no less than 8 years (you must not think that X.O is the name of the wine) and some may even reach 40 to 50 years. \r\n\r\n \\"X" represents five years, \r\n \\"XX" represents ten years, \r\n \\"XXX" represents fifteen years. \r\n \\"V.O" stands for more than 15 years. \r\n \\"V.S.O" stands for more than 20 years. \r\n \\"V.S.O.P" stands for more than 30 years. \r\n \\"X.O" represents more than 40 years. \r\n \\"EXT-RA" stands for more than 50 years.