UPC proudly brings you the finest range of International Cookware for smart, hygienic, healthy, smoke free cooking. The wok is 7 layered, with 2 layers of energy storage substrates, and food contact layer is made of Medical Grade stainless steel SUS 316. SUS 316 is one of the highest temperature enduring material that makes the cooking faster, easier, uniform and thus save energy. The inner non-stick coating is abrasion resistant that you can even use it with steel spatula.