Do you want to ask whether it is better to use 304 pan or medical stone? Use 304. Okay. 304 stainless steel pan has corrosion resistance, high temperature resistance and uniform heat transfer. Stainless steel pans are suitable for quick cooking. And medical stone (quartz sand) is not often used to make pans. Medical stone is mainly used in baking pans, ovens and other oven appliances, not pans. So use 304.