1, heat shrinkable film can effectively prevent the mobile phone from being damaged by moisture.

2. The heat-shrinkable film can effectively prevent the mobile phone from being collided by the outside world.

3. Heat shrinkable film can effectively prevent the invasion of external pollutants, thus prolonging its service life. Heat shrinkable film will shrink when heated, thus tightly covering the product. The shrinkage rate can be adjusted freely according to the user's needs, and the operability is strong.