1. Japanese Version: If you directly use the original manufacturer's certificate to declare, then it depends on how others interpret the relevant laws and regulations. There may or may not be a basis for allowing or denying your application.
2. It's recommended to replace the manufacturer's nameplate on non-official versions, as there are differences between the nameplates of official and original versions. This is actually quite easy to handle; just search on Taobao.
3. There was a rumor that only those with amateur radio operating capabilities could perform testing, and this is indeed possible. However, performing testing requires the equipment to meet specific qualifications or conditions, not all amateur-band transmitting devices can be tested.