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Screw cap with auxiliary pulling and screwing holes
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Wall calendar with roll paper hand drying machine
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Laminated nut
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Mould-proof and antibacterial domestic garbage can
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Easy-to-screw bolt
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Bolt provided with wrenching holes
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Wall calendar with brush plate uncovered money box
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Wall calendar with heating water cup disc
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Mould-proof rubbish bin
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Bolt with auxiliary screw head
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Tapered protection face ventilating automobile engine shroud
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Plant-plantable automobile rearview mirror
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Automobile rearview mirror internally provided with comb base type cosmetic case
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Bolt capable of achieving lubricating oil addition
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Bolt and nut capable of achieving matched fastening
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Hexagon nut with arrow-shaped friction lines
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Bolt provided with oil leaking holes
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Novel cotton fiber airflow measuring apparatus
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Novel yarn hairiness testing device
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Full-automatic filament yarn length measuring device
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