I ordered several chinese no-name power supplies on amazon but always knew that it was a gamble. Some still work fine to this day, some were DOA, some only lasted for a while. Some were certified, some were not but I never trust this on a no name item anyway. If you look at the reviews from some of the buyers, you’ll find some horror stories. I only buy when the savings are worth the risk. I would not when it’s $/€30 from bambulab and $/€20/25 on amazon, especially if you’re in the US and the power supply comes from China and not shipped by amazon.
Also you often read in the reviews that the power output is not as listed…