Not all products with a CE mark need to be checked by a third-party laboratory (called a Notified Body).
Only higher-risk items, such as Bluetooth earbuds, power adapters, or medical devices, require a certificate from a lab listed in the official NANDO database.
For these items, you must follow specific rules like the Radio Equipment Directive (RED) or the Low Voltage Directive (LVD). On the other hand, many general consumer goods—like toys, clothes, and simple plastics—fall under the GPSR or REACH rules and allow for "self-certification," meaning you don't need a Notified Body to sign off.
To stay safe, Amazon sellers should check their product’s HS code in the TARIC database to see which rules apply. If your Chinese certificate has a four-digit Notified Body number (like 0884), you must verify that number in the NANDO database to ensure the document is actually legal and valid.