Thin film products offer protection levels up to IP67 and IP68. At the same time, it has a good ventilation and cooling effect. Our film products are both hydrophobic and oleophobic. The hydrophobic film can provide good waterproof and dustproof performance. The hydrophobic and oleophobic film can provide good waterproof and dustproof performance, and can prevent the penetration of liquids such as surfactants and organic solvents. At the same time, it can prevent the film surface from being infiltrated by liquid droplets and thus lose the ventilation and heat dissipation function. In addition, the film also has extremely high filtration efficiency, high air permeability, low pressure difference, non-volatile, low residue, excellent chemical compatibility, and excellent temperature adaptability.