Surprisingly fast delivery! Board seems reasonably high quality, with component values also labeled in the silk screen layer. This is very nice. All components were included. Instructions are in Chinese, so I can't comment on their quality. The BOM + schematic + silk however are quite enough to assemble this if you have any experience with electronics. A thing to note is that the board expects a 2x 12V AC supply. This is pretty common for AC transformers, but those themselves are not too common any longer.
I am very happy: good quality PCB. Received with diagram. It seems to me that all the components are complete. There is even a small free screw. I can't wait to weld it all together. Thanks to the seller. Rapid dispatch. Good packaging. It's my turn to work now.