Latest Inventions, Goods, Services
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2024
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Invention
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Rigidity evaluation method for ballast track of railway. Disclosed in the present invention is a ... |
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Invention
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Sprayed polyurethane thermal insulation material for cold-region tunnel, use thereof, and constru... |
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2023
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Invention
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Damping anti-fatigue and anti-aging carbon dioxide-based polyurethane elastomer and preparation m... |
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2019
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Invention
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Fastener assembly with sleeper retaining shoulder used in ballastless track. Disclosed is a faste... |
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Invention
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Fastener assembly for ballast track. Disclosed is a fastener assembly for a ballast track. A slee... |
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