The technology of stainless steel vacuum insulation was invented in Japan in the late 1970s. It is an innovation in the production technology of vacuum flasks for daily use. This technology applies stainless steel materials to the manufacture of vacuum insulated mugs. According to the principle of vacuum insulation, the container is used to block the heat transfer inside and outside, so the temperature in the container can be maintained for a long time.

Compared with traditional glass insulated containers, stainless steel vacuum insulated cups are a kind of emerging consumer products, which have the advantages of good insulation performance, safety and portability, energy saving and environmental protection, stylish appearance, and rich functions. The product categories include vacuum flasks, vacuum flasks, insulated jug flasks, stainless steel thermo lunch boxes and stew pots. It can be widely used in home, office, student, outdoor, driver, catering, gifts and other fields.

The capacity of the thermos cup used in different places is also different. Due to the difficulty of taking water, outdoor travelers generally require a larger capacity of the outdoor water bottle, about one or two liters. However, in general daily life, you don't need such a big cup, about 450m or 550mll is enough.

The global and Chinese turnover of the stainless steel vacuum flask market was approximately US$4136.20 million in 2018. It is expected to reach 5,553.07 million US dollars by 2025. It is estimated that the compound annual growth rate of global and Chinese turnover from 2019-2025 is 4.12%.

At present, the main production area of stainless steel vacuum flasks in the world is China. In 2018, China has the world's largest stainless steel vacuum flask manufacturing and exporting area, accounting for 64.66% of the output of stainless steel vacuum flasks.

China has become a major producer and exporter of stainless steel vacuum flasks in the world, and it is also the market with the highest consumption level of stainless steel vacuum flasks in the world. The concentration of stainless steel vacuum flask industry is not high. There are many manufacturers in China's stainless steel vacuum flask industry. At present, China has more than 500 stainless steel vacuum flask manufacturers, but most of them are not large in scale.

At present, stainless steel insulation cups are mainly divided into vacuum type stainless steel insulation cups and non-vacuum type stainless steel insulation cups. Among them, the vacuum-type stainless steel vacuum flask is the main type of stainless steel vacuum flask. In 2018, a total of 624,240 thousand vacuum-type stainless steel vacuum flasks were consumed worldwide. At present, the more common vacuum insulation cups on the market are double wall vacuum stainless steel water bottle, vacuum stainless steel water bottle and thermos vacuum insulated bottle.

In 2018, the output value of non-vacuum stainless steel vacuum flask was 516.49 million U.S. dollars, and the market share was 12.49%. It is predicted that by 2025, the output value of non-vacuum stainless steel vacuum flask will reach 645.00 million US dollars, which will occupy 11.62% of the market share. In short, the future prospects of the stainless thermos flask are still very good. More and more high-quality high grade vacuum flasks will enter our field of vision.