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1, 314 stainless steel: the food-grade 314 stainless steel used by Sanmei vacuum flask brand is made of liner and other key parts to ensure safety, health and non-toxicity and provide good durability and corrosion resistance.

2. Double-layer vacuum insulation design: Sanmei vacuum insulation cup can reduce the conduction loss and block the backflow in wet and cold weather to the maximum extent to avoid the phenomenon that the outer wall is cold or the surface is too high or low temperature, and there are ways to increase the stability of the container to prolong the fresh effect.