@jackeric not the person you asked but I’ve been involved in shipping consumer electronics. The big thing is CE marking, which is a self certification process but involves various third party tests to ensure you’re compliant.
@jackeric for us that was a combination of physical testing for the casing (they threw a HUGE ball bearing at it to make sure it wouldn’t shatter) and radio emissions testing on the radios.
@jackeric how involved all this is depends what you’re shipping. The first time round wasn’t too bad because it was mostly pre-certified components put together. The second time was a nightmare involving coordination between our testing company and the hardware engineers in China, who would provide barely coherent test documentation. At one point I ended up on a two hour taxi ride to reflash the device being tested with new firmware.