Invention Patent Certificate (A system used for detecting the airtightness of refrigerators)

Invention Patent Certificate (A Detection System and Detection Method for Washing Machines)

Utility Model Patent Certificate (A Washing Machine Detection System)

Utility Model Patent Certificate (Equipment for Non-contact Detection of Condensation State in Refrigerator)

Utility Model Patent (A device for cleaning and inspecting Hansen valves)

Utility Model Patent (A system used for detecting the airtightness of refrigerators)