Futures related to crude oil include: asphalt, PTA, PP, PVC, EG, low sulfur fuel oil, rubber, polyethylene, polypropylene and so on. These are highly correlated varieties. Commodity futures refer to futures contracts with physical goods as the subject matter. Commodity futures have a long history and a wide variety, mainly including agricultural and sideline products, metal products and energy products. It is a standardized agreement about the buyers and sellers buying and selling a certain number of physical goods on an agreed date in the future at the price agreed at the time of signing the contract. Commodity futures trading is a standardized contract trading method for buying and selling specific commodities on futures exchanges.