At least so far, we know that Baidu has many certificates.

Moreover, the results of each review are generally good and trustworthy.

Although there have been some scandals, on the whole, it is ok, don't worry.

You can check it on 360 Jewelry Guard. I didn't know you said you couldn't look it up.

Generally speaking, it is not a big problem to query in official website. If you can't inquire, you can call the testing institution for re-examination. Some new certificates or certificates that have been made for too long may not be available.

Generally speaking, I hope to have some reference.

Please do not use URL links.

Good luck!