Finally soldered these modules and apparently, they are not of high quality. After assembling the gamepad I realized that dead zones are insane, and it's uncomfortable to use a 'fixed' gamepad. While mechanical parts of the modules are ok, potentiometers are obviously terrible and of low quality. I had to disassemble my gamepad again and remove new potentiometers, while leaving the mechanical part of modules in place, and then solder back old potentiometers. Before that, I opened them and took a photo. Apparently, the difference between the original ones and your bootlegs is huge. But the thing is that many games can compensate for problematic input, and if you haven't tried the original gamepad, most likely you will have no clue if anything is wrong. The original is always the best. Thus, considering the price, this is normal.
I got the order. Not tested yet.