Stainless Steel Vacuum Cup Has The Function Of The Heat/cold

- Nov 15, 2019-

Stainless steel vacuum cup has the function of the heat/cold, normal temperature, heat preservation and cold function is less, the effect of the vacuum keep-warm glass is much better, hot weather when we can load with vacuum keep-warm glass ice water or ice, let you at any time can enjoy ice cool feeling, can be in hot water in the winter, so you can at any time to drink warm boiled water.