You can check the name of your fund, or know which fund company's products you bought, and you can call the customer service of the fund company to ask about the expiration date. If you forget the name of the fund but know which fund company it is, call the fund company and report your ID number to the other party, and the other party can inquire about the fund share you hold. If you are not sure which fund company's products are, you can go to the bank or call the bank's customer service consultation.