>and sends them for recycling.

>If the recycler sells them on ebay as 'never worn ExampleCo jeans' then

the recycler will have undoubtedly violated a contract they have with ExampleCo and will lose in civil court and pay significant penalties greater than the money they made selling never worn ExampleCo jeans and also, undoubtedly, suffer from not having ExampleCo as a customer for their services in the future.

But the recycler has all the papers and documentation that they lawfully contracted an overseas company for wholesale recycle of the product. What's your civil court's jurisdiction? You might be able to play wack-a-mole with ebay, temu, alibaba express sellers through civil court in your jurisdiction assuming you have the money of course.