Zhiguo Song

4 Patents

• US124739902025

  Valve Device

  ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., Ltd.

  0 cites
• US124291382025

  Connection for Valve Seat and Valve Body Unit

  ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., Ltd.

  0 cites
• US124049412025

  Combined Four-way Valve, Air Conditioning System and Vehicle

  ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., Ltd.

  0 cites
• US119465582024

  Valve Body Connection Structure and Valve Assembly with Valve Body Connection Structure

  ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., Ltd.

  0 cites