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Nowdays, the trval of old people who has worked
hard all their life is more and more popular. But
much trouble will be caused by age, for example,it is not good for oldpeopleto drink unboiled water.Then the CAP HEATER wii solve the problem well by
heating the mineral water with a small size which is
suitable for carrying about. Carrying the cap heater along the old people are
able to heat mineral water everywhere and anytime .
Shuo Wang, Hansen Wei, Shaochen Li, Jinrui Xu