Stainless steel thermos is something we often use in our lives. It can be used to store juice in summer, but it is very convenient to store hot drinks in winter. So what should we pay attention to in the selection process of thermos? How to distinguish between good and bad quality? Let's talk about how to distinguish the quality of stainless steel thermos cups.

The first is the simple identification method of stainless steel materials: there are many specifications of stainless steel materials, of which 18/8 means that the composition of this stainless steel material contains 18% chromium and 8% nickel. The materials that meet this standard meet the national food grade standard. Green environmental protection products, products are rust-proof and corrosion-resistant. The color of the ordinary stainless steel cup is whitish and dark. If it is soaked in salt water with a concentration of 1% for 24 hours, rust spots will occur. Some of the elements contained in it exceed the standard, which directly endangers human health.

The second is the easy identification of the capacity: the depth of the liner is basically the same as the height of the shell, and the capacity (with a difference of 16-18mm) is consistent with the nominal value. Some poor quality thermos cups add sand and cement blocks to the cup to make up for the missing weight. Myth: Heavier cups (pots) are not necessarily good.