Spot bulk commodities are traded on margin, but the proportion is higher than that of futures, which is used to distinguish them from futures and avoid being limited to disguised futures. In fact, they are still in the spot. However, drawing on the price discovery function of futures, many participants make expectations for future prices and form real future prices. In fact, varieties can be made wider than futures, which is also the reason for state support. Many agricultural products, such as pigs and aquatic products, are not suitable for futures At present, the price of this market is rampant, and I believe it has been integrated and standardized. If you want to fry, you can choose a variety with a high price. The small variety market is relatively small, more irregular, and the phenomenon of market fraud is serious.