You have opened the Western Union remittance service in China Postal Savings Bank. You can check whether you have registered for Western Union remittance in the following ways:

1. Log in to the mobile banking or online banking of Postal Savings Bank and check whether there is the option of "Western Union Remittance" on the "Transfer Remittance" or "Foreign Exchange Remittance" page. If so, it means that you have signed up for Western Union.

2. Call the customer service telephone number of Postal Savings Bank at 95580 to inquire whether the Western Union remittance service has been signed.

3. Go to the counter of Postal Savings Bank and ask the staff if they have signed up for Western Union remittance service. It should be noted that Western Union remittance service may need to meet certain conditions, such as identity and payee information. For details, please consult the relevant staff of the Postal Savings Bank.