- Technical Patents
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- A Tubular Sealing Protective Sleeve for Automotive Drive Shafts
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- An Anti-Wear Protective Sleeve for Drive Shafts
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- A Quenching Furnace for Torsion-Enhancing Heat Treatment of Drive Shaft Yokes
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- An Auxiliary Device for Heat Treatment of Drive Shaft Yokes
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- An Oil Seal Device for the Protective Sleeve of Automotive Drive Shafts
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- An Intelligent Monitoring Device for Drive Shafts
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- A Universal Joint Yoke for Drive Shafts
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- A Cross Pin for Cross Shaft Universal Couplings
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- A Universal Joint for Drive Shafts
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- A Universal Joint Slip Yoke for Automotive Drive Shafts








