[mariomariomario]

No this is classic inventory commingling, for brevity let's say that Amazon has 100 fulfillment centers (FCs). When you ship in 10,000 units, Amazon will then take those 10,000 units and spread them to the FCs closest to the top of the bell curve of the normal distribution of your orders. And the same goes for any third party sending inventory to be sold on your listing. When you use a "manufacturers barcode" ie. UPC / ISBN as the only identifier on the product, that's the only way Amazon can identify what it is unless you use an Amazon barcode.

If people didn't sell counterfeit products, we would enjoy the amazing logistics network that Amazon has built.

My recommendation is that you become Brand Registered on Amazon, you get a hell of a lot more weight to throw around on your listing, ie. kicking off sellers who are not authorized to sell your products. Go look at any Anker product, you will see that "AnkerDirect" is the only seller on any of their listings because they are Brand Registered.

You could also go the Seller Fulfilled Prime route for full quality control, which allows you to keep access to the Amazon marketplace but you are responsible for logistics end of the bill which is a tall order but there are 3PLs that can help with that sort of ask.