Ah, I see. I'll just pretend I never looked then and ride them into the ground.
Cheap things are cheap.
The bearings are probably a tad on the loose side, hence revealing a less than perfect tolerance... nothing to worry about, they are agricultural grade bearings and do the job well... if you want accurate tolerances and Japanese precision you need to go up to the Ultegra level (actually that is still Malaysian precision, Dura Ace is Japanese precision), yours are kind of Tiagr level
The bearings are probably a tad on the loose side, hence revealing a less than perfect tolerance... nothing to worry about, they are agricultural grade bearings and do the job well... if you want accurate tolerances and Japanese precision you need to go up to the Ultegra level (actually that is still Malaysian precision, Dura Ace is Japanese precision), yours are kind of Tiagr level