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Invention Patent Certificate (Lightweight wear-resistant aluminum based powder metallurgy composite material rail transit brake disc and its preparation method)
Patent certificate for invention (Boron nitride and aluminum nitride reinforced aluminum matrix composites, their preparation methods and applications)
Invention Patent Certificate (Titanium Alloy Surface Treatment Method)
Utility Model Patent Certificate (Overturning Sling for Rail Transit Brake Discs)
Utility Model Patent Certificate (Split Brake Disc)
Utility Model Patent Certificate (Mold Heating Device)
Utility Model Patent Certificate (Lightweight Automotive Brake Disc)
Utility Model Patent Certificate (Powder Scraping Device)
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Address: No.116 Linyu Road, Yuelu District, Changsha City, Hunan Province
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