Widely used in optical products, hardware products, plastic products, etc., such as cold laminating on the surface of small sheets such as mobile phone lenses, glass covers, light guide plates, glass sheets, UV sheets, signage, PC sheets, etc. After coating the surface of the product with film, it is easy to prevent pollution, corrosion, scratches, etc. during production, processing, transportation, storage, and use, and to protect the original smooth and shiny surface as well as the lens from bursting.