1. Only corporate customers can enter the delivery month (except Shanghai Futures Exchange), and individual customers cannot enter the delivery month. If the price returns in the delivery month, then individual customers often can't wait for this time node;

It is normal that the price difference is unreasonable. There are many factors to be considered in futures delivery. Even if you are a legal person customer who can hold positions in the delivery month and enter the delivery, you still need to consider the capital cost, storage fee, freight, delivery fee, warehouse allocation and so on. Because of many factors, it seems that the price difference is very large, and it is very likely that there is no profit space or even a loss.

3. Sometimes the spot price difference just doesn't return, the market is always right, and it's normal that the price difference doesn't return.