R&D Innovation

Has a "riveting parts R & D center" jointly run with Hunan University, and has applied for a total of 55 patents, including a total of 15 items

Invention Patent Certificate

Invention Patent Certificate

Invention Patent Certificate

Invention Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

Utility Model Patent Certificate

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