Qingbo Zheng

4 Patents

• US125028592025

  Fully-automatic Production Line and Automatic Production Method for Rubber Seal Rings

  CHENGDU HOLY AVIATION SCIENCE TECHNOLOGY CO., Ltd.

  0 cites
• US124095942025

  Automatic Forming Method and Device for a Rubber Sealing Ring Blank

  CHENGDU HOLY AVIATION SCIENCE TECHNOLOGY CO., Ltd.

  0 cites
• USD10876412025

  Sofa Bed

  NINGBO YISUN GRAND IMP & EXP CO., Ltd

  0 cites
• USD10405482024

  Sofa

  0 cites