I ordered three pieces. One of them was not well secured during transport. The control panel has been scratched and dented. I attach photos.
The assembly of the chip is below any criticism. The triac doesn't screw them to the heat sink, let alone lack thermal grease. Better to check and correct before running. The infrared remote control doesn't always work. After pressing the key, there is not always the reaction of the regulator.
Slightly damaged front panel and button on it (definitely before shipping), but otherwise fine.