Zheshang futures account number 1900 is led by the account number of the business department. The business department is a branch of the futures company, which is responsible for customer account opening, trading and settlement. Each business department has a unique code to facilitate the management and supervision of futures companies. In Zheshang Futures, the business department code is represented by 4 digits, where the number 1900 represents the business department code to which the account belongs.