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Method for automatically opening or closing forging furnace
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Using method of automatic feeding device
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Use method of petroleum elbow clamping device
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Machining positioning method of pre-welding purifier
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Using method of vibrating screen plate
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Stable-type forging heating method
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A kind of using method of pipeline support body
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Petroleum elbow transporting and clamping method
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Drill bit sorted storing method
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Rapid nail puller
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Clamping method of pre-welding purifier
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Method for measuring oil level stably
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Nail puller for wooden formwork of building external wall
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Polishing method for inner surface of elbow pipe
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Use method of tool
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Waste material collection method for band saw mechanism
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Method for collecting car window packaging materials
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Blank drilling method
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Thermal insulation method for valve
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Using method of observation desk produced through glass
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