Hot water inside and stainless steel vacuum flask which good heat preservation effect
Glass tank have been used for decades, technology has been very mature, as long as not a buy don't heat preservation, generally with a couple of years there is no problem, and the stainless steel tank up to two years of time!
In the beginning, the stainless steel tank with glass tank may be very heat preservation, but in the past period of time, if you accidentally bruising stainless steel vacuum flask is easy to vacuum, and the heat preservation effect!
Have a good, bad, cannot treat as the same. But from our years selling experience of the vacuum flask, it is recommended that you buy the glass tank vacuum flas
