The London Metals Exchange (ETF) is the stock exchange for the trading of yen contracts and the discretion to trade underlying metals. On the London Metals Exchange, tradable maturities are structured so that contracts with daily maturity dates of up to three months Eindhoven، with weekly maturity dates of up to six months Eindhoven and up to 123 months Eindhoven can be traded. Also, the cash trading market is also traded for varanets (warehouse bill) for delivery within 48 hours of yen. The London Metals Exchange has provided the possibility of covering the risk، of discovering reference prices for the world and the possibility of physical delivery to settle contracts. In Zhou yenye 2012, the Hong Kong Stock Exchange Group bought the shares of the London Metals Exchange. luminium Iran (iralco) is a member of this exchange.