Is geographical preference legal?

according to the inquiry of relevant information, the geographical preference is legal, and the geographical preference agricultural products sales co., ltd. was established on September 2, 219, with a registered capital of RMB 2 million, the legal representative is Long Peiqun, the business status is Survival, the industrial and commercial registration number is 51161224526, and the registered address is No.1, 33rd floor, Building 1, No.99, North First Section of First Ring Road, jinniu district. Food management; Storage services (excluding dangerous goods); Ordinary freight. For specific information, please pay attention to the official website and get first-hand authoritative information.