1.316 stainless steel has stronger corrosion resistance, if you often use a cup to make drinks (milk, coffee, etc.), it is recommended to choose 316 stainless steel. As for tea, the corrosion of stainless steel is relatively small. Therefore, whether it is tea, flower tea, fruit tea, choose 304 stainless steel is enough.
2.316 stainless steel is more expensive than 304 stainless steel, but the hardness is softer than 304 stainless steel. Therefore, although 316 stainless steel has strong corrosion resistance, it is not recommended as the first choice. Or that sentence, not in the cup of milk tea, coffee, there is no need to buy 316 stainless steel cup.