Let me give you an example from Li Ning. For ARHE033-1 shoes, A represents Li Ning, B~G represents other sub-brands of Li Ning Group, and RH represents running shoes (shock-absorbing running shoes). E is the year. The 4th letter of Li Ning’s model number represents the year since 2006. A is 2006, B is 07, C is 2008, D is 09, and E is 2010. Each brand is represented in a different way. The same, but there are rules to follow. If you want to do brand sales in school, I suggest you go to the local specialty store and ask. Generally, Li Ning needs to be authorized to sell, otherwise you can only go to the specialty store to buy a certain amount of goods ( There will be different discounts according to the amount), and then retail