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A kind of gear drive volume damper
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A kind of variable air rate regulating valve
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A kind of novel negative pressure weighs cover
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A kind of Novel door hinge formula blinds return air inlet
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A kind of high efficiency filter air port in new type purification equipment
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A kind of novel cleaning clean room pass-through box
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One kind is new and effective baffle filter
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A kind of variable air rate regulating valve for being applied to cleaning equipment
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A kind of leafy air-valve of novel manual opposite opened
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High-efficient three-level sealing strip negative pressure guide air blowing opening
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Novel purification hollow window profile
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Novel hollow window profile for purification door
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