Earn money. Because grain, oil, rice and flour are the necessities of life, the market demand is large, people's dependence is strong, so grain and oil wholesale earn money. Grain and oil wholesale industry refers to the wholesale enterprises specializing in the sale of various types of grain and oil products, whose products include rice, edible oil, flour and so on. With people's concern for healthy living and the increasing demand for quality consumption, China's grain and oil wholesale market is gradually showing a trend of steady growth.