Inquiry of an Ex Certificate  is usually conducted through the official website or contact phone number of the certifying body. Below are the detailed inquiry steps and precautions provided by STS:

I. Inquiry Methods

- ◆ Official Website Inquiry: Locate the "Ex Certificate Inquiry" or similar entry on the official website, then enter the name of the certificate-holding entity and the complete Ex Certificate number to make the inquiry.

- ◆ Contact Phone Inquiry: Directly dial the contact phone number of the certifying body and inquire according to voice prompts or manual service.

Note that for some institutions, due to newly issued certificates or delayed data updates, the certificate information may not be immediately retrievable on the website. In such cases, inquiring by phone may be more direct and effective.

II. Precautions

- ◆ Confirm the Accuracy of Certificate Number and Entity Name: Before inquiry, ensure that the entered certificate number and entity name are completely consistent with the information on the Ex Certificate to avoid inquiry failure caused by input errors.

- ◆ Pay Attention to the Certificate Validity Period: Ex Certificates  have a validity period; please make the inquiry within the valid period. If the certificate has expired or is about to expire, contact the certifying body in a timely manner for renewal or update.

- ◆ Contact the Certifying Body: If the certificate information cannot be retrieved through both the official website and contact phone, it may be that the information has not been uploaded to the website database or there are other special circumstances. In this case, it is recommended to directly contact the certifying body for consultation and verification.

We hope the above information helps you successfully retrieve the relevant information of the Ex Certificate.