Open Baidu's "Shenzhen Food Safety Administrator Training and Assessment Network"-click the webpage, then click the "Home Page" drop-down page to find "Simulated Assessment Test"-click to enter the login interface, enter the "ID number", enter the "Verification Code"-click Submit.

You can take a mock exam and click "Submit" to see the answer.

Web page link

20 days before the expiration of the Certificate of Training and Examination for Food Safety Administrators in the Field of Food Circulation, you should bring your ID card, two copies of business license (with official seals), two one-inch color photos and your old certificate. Just change it at the place where the certificate is issued.