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A electro magnetic stirrer of the power supply
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The cable guide device of which the oil supply sfficiency is excellent
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Device collector current superior with easily fixed and separated of brush
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Device sensing wear limit of brush
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Device collector current superior efficiency maintenance
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Device removing automatically copper string of trolley bar
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Trolley bar used safety accident prevention
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Improved sheet pile for reinforcement of a ground against distorted area of the same and the method of placing the same on the ground
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Brush structure using led roller
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Structure of drain pipe for bridge
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Device control argon gas for nozzle tundish
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Device measurement automatic air flow for nozzle tundish
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Structure of wearing measurable brush holder of crane collector
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Separate member bubble and air for water collecting apparatus cleansing liquid alkali
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Structure of brush and brush holder of crane collector
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