2.3 16 stainless steel is further upgraded on the basis of 304 (controlling impurity ratio and adding 2% more molybdenum), which makes it have a special corrosion-resistant structure, which is stronger than 304, and is mainly used in food industry, watch accessories, pharmaceutical industry and surgical instruments.

3. Stainless steel thermos cup is made of inner and outer double stainless steel. The inner container and the outer shell are combined by welding technology, and then the air in the interlayer between the inner container and the outer shell is pumped out by vacuum technology to achieve the effect of vacuum insulation.