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How does jsa official website check the certification of jerseys?
The authentication steps are as follows:

1. Open the official website of JSA. Find and click "Authentication Query" or similar options. This is usually on the home page or menu bar.

2. On the "Query" page, enter the certification number or related information of the sweatshirt.

3. Click the "Query" or "Search" button.

4. The system will display the jersey certification information related to the certification number. Include authentication status (passed or failed), authentication date, authentication type, etc.