At present, the Shanghai Futures Exchange implements the system of one household and one yard. Legal persons or natural persons can only open accounts in futures companies. Of course, you can open an account with another futures brokerage company, and you don't have to close it. But no matter which futures company you open an account with, the futures trading code of your previous period is certain.

So: You can open different futures accounts in several futures brokerage companies, but your futures trading code is the same.