1. Needle body: This is the core part of Self Adhesive Stick Insulation Pins, typically made of high-strength metal materials such as stainless steel or carbon steel. The design of the needle body needs to ensure that it will not easily bend or break during use.

2. Insulation layer: The needle body is covered with a layer of insulation material, usually polytetrafluoroethylene (PTFE) or other high-performance plastics. The function of the insulation layer is to prevent current from conducting through the needle body, thereby ensuring the safety of the operator.

3. Self adhesive layer: There is a special layer of self-adhesive on the outer surface of the insulation layer. This adhesive has good adhesion and weather resistance, ensuring that the insulating needle can firmly adhere to the target object under various environmental conditions.

4. Protective film: In order to protect the self-adhesive adhesive layer, Self Adhesive Stick Insulation Pins usually have a layer of protective film before use. When in use, simply tear off the protective film to stick the insulation needle to the desired position.