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How to choose to buy stainless steel vacuum flask
There are a lot of stainless steel vacuum flasks on the market today, and the price difference is also very large. How to choose a stainless steel vacuum flask with affordable price, long heat preservation time and durability is a concern of many people. Today I will give you a brief introduction to the technique of selecting stainless steel vacuum flask.

Look at the material

There are many kinds of stainless steel materials. There are 201 stainless steel, 202 stainless steel, 304 stainless steel, etc. commonly used in the market. The corrosion resistance of 304 stainless steel is better than that of 201 stainless steel, and the price will be more expensive, so the stainless steel insulation on the market Most of the cups are made of 304 stainless steel.

See technology

The most important principle of the vacuum flask is to draw a vacuum between the two-layer stainless steel structure because the vacuum does not transfer heat. The vacuum pumping technology is divided into two types: no tail vacuum and tail vacuum. The traditional vacuum cup will have a suction tail. The tailless vacuum technology uses a special process to weld the glass mouth, so there is no sharp tail. , to avoid the impact of the end of the suction and damage the cup. The tailless vacuum technology is more advanced and the insulation effect is better.

Look at the seal

After the cup is filled with water, it is inverted to see if there is water overflow. If it is not, it indicates that the seal is good. A well-sealed cup will not leak.

Look at insulation performance

Put in hot water, touch the surface of the cup after 2-3 minutes, if there is obvious warmth, it has lost the vacuum insulation performance.

Look at accessories

The details determine success or failure. A good vacuum flask is not just technology and materials, but also requires a spirit of excellence in the details. The quality of the cup mat determines the tightness of the cup. The material and craft of the bottom mat reflect the humanistic feelings of a company.

Look at the appearance

Look at whether the appearance is flawed, whether the work is fine, whether the cup mouth is smooth and sleek, the appearance is exquisite, the workmanship is excellent, and the quality of a manufacturer is emphasized. The pursuit of fine detail has always been strictly controlled.
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