The main reasons for the uneven insulation cup are as follows:
1. Material from high to low: medical stainless steel, 304, stainless steel, 206 stainless steel, manganese steel (used by lawless)
2, the level of vacuum pumping from high to low: seamless vacuum, high vacuum, vacuum, double layer insulation, double insulation heat insulation (generally loaded with sand and heat insulation)
3. Brand value (this can't be measured)
The same type of thermal insulation cup can be more than 5 times the price.
China's most classic bullet - shaped 500 milliliter cup is the cheapest of only 12 and the most expensive one is 258.