Silicone pressure-sensitive adhesives are widely used in the preparation of various protective films for the electronics industry, providing comprehensive protection for the transportation, manufacturing and use of precision components. In the field of wireless charging, pressure-sensitive adhesives help to bond, fix and protect the modules at the receiving end and the transmitting end, enabling them to play their energy efficiency. In the field of display, optical pressure sensitive adhesive is used to bond all kinds of optical materials inside the screen, so that it can still maintain optical transparency under high temperature and humidity conditions, and ensure the clarity of imaging. Because many smartphones are expensive, it's even more important to protect their high-quality screens from scratches and bumps during use. When mobile phones leave the factory, manufacturers usually stick a thin film on the screen surface to protect the screen from scratches and bumps that may occur during transportation or sale. And silicone pressure sensitive adhesive in this layer of thin and tough protective film has a wide range of applications. The protective film is usually composed of multiple layers of "sandwich" structure, and the specific properties of each layer of adhesive depend on its structure and chemical composition. Among them, pressure sensitive adhesive layer plays a key role.