It's worth mentioning that the housings of many products are frequently sold to multiple manufacturers as components ( though in this case I suspect it's probably the same product ). I've also seen suppliers change the contents of batches of products once an order has been placed ( I'm talking palette loads of products that land with changes to the electronics - even as a single importer specialising in a given product it can be impossible to guarantee continuity of supply from the east ).
This makes any attempt to police this kind of re-branding highly impractical since you need to disassemble any given product to verify it's contents, even within the same order.