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How to Check CQC Certification for TNR™ Ceramic Varistors

Details about CQC certification can be found on the CQC website which you can reach by following the link at the bottom of the acquired safety standards on each individual product page.

  1. Click on the link to the CQC site.
  2. Under Keywords, enter "CQC *********". Then enter the alphanumeric code shown to the right of "Image code" and click on "Query". If the image code is difficult to read, click on "change" until an image appears that you can read.

  3. (Example for TND 10V) The search results will appear as shown in the illustration below. The word "Valid" in the status column indicates that the CQC certification is valid. If products which do not meet the CQC standard are found on the market, or if the certification is revoked for reasons such as non-compliance discovered during a factory audit, such information will be shown here.

  4. Clicking on the "Attachment" column on the far right shows the name and product number of certified models.


If you have any questions or inquiries that do not apply to the above, please contact us at the following address.

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