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Airless jar

Airless jar is oint to a kind of can make the gas and the outside temperature of isolation tank or isolate external containers of bacteria. Market practice vacuum bottle is by a cylinder into TuoYuanTi container and a set of the bottom of the pistons. It is the design principle with spring metal contraction force, and do not let the air into the bottle, create a vacuum condition, and using atmospheric pressure to push forward the bottle to Detroit. But because the spring force and the atmospheric pressure can't give enough power, so the piston can't and bottles of wall joint is too tight, otherwise the pistons for resistance and can't be too will rise ahead.

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