Commodities refer to all kinds of commodities purchased or entrusted by circulation enterprises and sold in storage. The basic attributes of commodities are value and use value. Value is the essential attribute of commodities, and use value is the natural attribute of commodities. Commodities have both economic and financial significance. Commodities in the economic sense refer to products specially used for exchange, that is, producers do not consume themselves, but exchange other products they need with other producers. In the era of socialized mass production, almost all industrial products and most agricultural products belong to commodities. Commodity in the financial sense actually refers to commodity futures, that is, standardized commodity forward contracts If it is not sold, it is not a commodity.