316 stainless steel is used in the food industry, medical equipment and so on. And 304 stainless steel is mostly used in kettle, thermos, tea strainer, tableware and so on, which can be seen everywhere in home life. Therefore, 316 stainless steel insulation cup quality is better.
316 stainless steel basically does not exist in the phenomenon of thermal expansion and contraction, corrosion resistance and high temperature resistance are better than 304 stainless steel, with higher security.