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The vacuum bottle draws the air in the bottle from the middle red filter with a hand-held vacuum pump, it maybe need to draw several times when you need to use the bottle. When the bottle is close to the vacuum, the small red vacuum indicating bubble will collapses, this mean the client can stop drawing the air.

The yellow knob turns along the blue guide, the middle number from the hole indicates the date of vacuum pumping, you need to set it by the hand.

The vacuum bottle is mostly used for long-term storage of food and medicine. It could be cleaned with cleanser at high or low temperature.

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