The man is a sculptor, we sell handmade goods abroad. Did the Chinese steal…?

... photo and plagiarized the product.

It is difficult to fight with them. But now this product is also sold in Ukraine, with our photos taken in our studio. The store was asked to remove it and sent a photo proof that everything is from our studio. They refuse to remove it, citing that they bought it in China. But we have original photos as proof of ownership

How to act in this case?