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A collector shoe manufactured by powder matallugical material and that method
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Carbon based slider for pantograph
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Composite carbon contact strip for pantograph
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Solid lubricant for pantograph of electric car
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Pocketless brush
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Slip ring
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Manufacture of ferrous wear-resistant sintered alloy for current collecting and sliding
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Lightweight, composite and wear-resistant sliding current collector
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Manufacture of sintered material for collector for traveling in low-speed region
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