I was the owner of a company that made work over rigs (like a mini oil derrick on wheels for fixing wells). We had a supplier in China who manufactured certain parts for us. Had QC problems that we helped them through.
Ton”reward us”, they would make 100 parts for us (a part they was largely consumable) and 100 parts for them they would sell with our name on it. Identical stuff. Realized there is zero way to stop the theft. They straight up thought it was fine to do. No concept of personal property rights.
So we stopped using them and changed our specs arbitrarily so their part wouldn’t fit. They went broke.
This is 100% true of anything made in China.