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A kind of adhesive button
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A kind of eye-splice intersecting loss prevention
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A kind of engagement type paper knife
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A kind of split type fastener member
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A kind of cutter unit of optional mode and vegetable-chopper it includes the unit
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A kind of eye-splice pressing cover loss prevention
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A kind of plug-in paper knife
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A kind of vacuum biological sample storage device and biological sample storage method
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A kind of annular buckle closure vacuumizes sample storage sealing device and method
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A method of saving device and its processing of biological sample
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A kind of device and its processing method of sample container of the encapsulation with membrane structure
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A kind of reusable vacuum biological sample storage device and biological sample storage method
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A kind of adjusted size of flexible pouch of freedom vacuumizes storage sealing device and method
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A kind of twist blade formula Total heat exchange core apparatus
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A kind of annular air heat-exchange device and heat change method
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A kind of heat pipe Total heat exchange core apparatus
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A kind of fresh air Total heat exchange mechanism
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A kind of symmetrical structure Total heat exchange core
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A kind of grid type heat exchange device for air and heat change method
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A kind of torsion Total heat exchange connecting pipe device
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