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Material returning apparatus
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Internal circulating air cooling device
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High capacity isothermal nitrate tank
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Flipping apparatus
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Heat insulation top cover of heat treatment furnace
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Triangular self-tapping screw manufacturing process
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Screwdriver
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Coal feeding hopper
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Sealing device of screw conveyer
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Heating dehumidifier shell
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Dowel screw forming die
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Device for measuring temperature in vacuum furnace
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Bolt
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Assembling fixture
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Combination nut
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Process for manufacturing quincuncial dowel screws
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Air guide device
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Loose prevention device
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Special sealing screw for container
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Welding screw moulding die
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