Shanghai Metal Futures Shanghai Aluminum al0903 refers to the aluminum contract that expires in March 2009. The delivery date of Al 0903 is after March 15 (postponed in case of legal holidays), and the delivery date is 5 days. Therefore, on the last trading day of February, 2009, the natural person account needs to close the aluminum 0903 contract, and only the legal person account can make delivery. If the position is not closed, the exchange will forcibly close the position.