Works fine. Using it as a high current power supply rather than for driving LEDs, though I haven't tested it out to the full 20A. Nice aluminium/plastic case on it - a plus. And has a protective earth connection to the metal case, not like some I've seen. Tiny fan inside to keep things cool. Good large screw terminals for heavy current. Delivery a bit slow, but due to limitations of air freight (to Australia) caused by Covid19. Aliexpress needs to extend the delivery cutoff time during Covid - some items I have received later than the cutoff period. This one arrived about 2 days before the cutoff.
Fast delivery still need to check it but will gave additional review after testing!