He is the main function of heat preservation if this bottle tank insulation only go to buy a new one...
Not, is the work of the vacuum flask has a problem, not cold water hot water floor general, may be because the vacuum flask material thermal expansion coefficient is bigger, plus interface is not completely smooth, will cause water leakage.
No,it mus be the quality problem, its sealing is not good
It is you that quality is bad, the price also does not reach the designated position, more than 140, I bought my son is very good, heat preservation and not leak
