Hainan Trading Center earns money from coking coal futures. According to public information, coking coal futures is a kind of coal energy commodity listed on Dalian Commodity Exchange. It is a commodity futures with high price, great fluctuation, high income and high risk, and has always been very popular. Details of coking coal products: code jm, 60 tons per lot, lowest fluctuating price per ton 0.5 yuan, coking coal futures fluctuating 30 yuan, margin 20%. Margin calculation format: the current market price is multiplied by the contract unit multiplied by the margin ratio, so the coking coal futures of Hainan Trading Center are profitable.