High altitude workers on construction sites face dangerous situations such as high altitude, high temperature, high cold, and high risk. Construction workers who work on the ground may seem easy and safe, but they are actually very tired. On construction sites, there is a type of job called winch operator, who needs to use machines to lift heavy objects such as construction materials and decoration materials to high places.

Glass curtain walls require extra attention when lifting materials. Any slight mistake can cause glass to fall from high altitude. During formal lifting, as the work area rises layer by layer, the operators on the upper floors of the work area use machines to lift the curtain wall panels from the ground to the designated area, and communicate with the winch operator downstairs through walkie talkies about the lifting and lowering of the curtain wall panels.

The winch belongs to the category of electric equipment, and the operator does not just need to press the lifting button, but also needs to have a tacit understanding with the staff above. For example, when there is a strong wind, the sound of the walkie talkie is low, and gestures can be used to convey meaning.