Detailed Product Description The non-stick coating we use is AKZO NOBEL from USA, we also use coating from South Korea., we have got FDA, LFBG certificate. The product is mirror polished surface outside, two layers of non-stick coating inside, nice look, freely combine, easy to clean, the thickness of product is 2.0mm-3.5mm, usually one poly bag for each piece, 6pcs in a gift box as a set, 4sets/ ...