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One of the first challenges we face is keeping hot beverages hot and cold beverages cold for long periods of time. As a result, we owe it to inventor James Dewar to invent the vacuum flask, which has greatly simplified this procedure. Because of people's fast-paced, chaotic existence, sitting and drinking a hot or cold beverage appears to take a long time. As a result, the demand for personalized insulated water bottle is increasing. As a consequence, a vacuum flask allows users to drink on the move without sacrificing the hotness or coolness of the beverage.
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