Quality has been the companies top priority. Our products strictly in adherance to stringent qualty standards of Bureau of Indian Standars (ISI). The coating used is from different well known International Brands. These coatings are authorised by European and American health authorities. Black Diamond gives an exhaustive range of cookware and is commited to developing newer and better designs to cater to ever growing deman of such quality products.Surface is Harder than Stainless Steel and Allows Very Low use of oil for Cooking. Ideal for Modern Homes and Long Hour Cooking Kitchens. Metal Spatula's / Spoons can ly be used. Dishwasher Friendly - Very Easy to Wash with Hot Water . Strong Structure and Handle Connectors make this unit a Long Lasting Edition to Your Kitchen - for Both Home & Professional Chefs.