The issue is real, however the manufacturers can not do anything. If you have proof of purchase and the paperwork for a certain chinese supplier, you can run right through the sale and never look back.
If you don't have the proof of purchase (receipt) then if it is a branded item coming out of china, 7/10 times the manufacturer will be able to make the excuse to go after you.
Picture it this way, when you buy from anyone at DH Gate you need to cross your Ts. Alot of them are selling fake items and then some of them who you should talk to for a while before doing anything....are selling overruns, and the overruns require you to cross your Ts and get a proof of purchase receipt something of that nature. Then there's never going to be anymore issue.
But remember, if it is a branded item from China its either an overrun or a fake and you cross your Ts if its a high end brand item.