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Feeding frame
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Auxiliary machining tongs for fastener
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Drilling aid
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Undetachable screw component
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General feeding frame
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Descaling and cleaning device for pipe inner walls
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Packaging movement box special for fastening members
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Drilling template
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Formwork for tunnel drilling
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Novel formwork for tunnel drilling
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Anti-loose zinc-plating nut
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Surface treatment method for wind power tower base connecting pair
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Inner flower type fixing double-end stud fastener
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