Waterproof sound permeable film die-cutting products can be used in speakers, earphones, speakers, MIC and other electroacoustic devices, can also be used in Bluetooth headphones, Bluetooth speakers, smart home, smart watches, smart bracelets and other smart products, the main purpose of these products waterproof sound permeable film application is to achieve sound permeable requirements under the premise of waterproof, because sound is transmitted through the air, Therefore, in the position of these electroacoustic devices are sound-permeating holes, sound-permeating holes if they do not do protection, it is inevitable that there will be water, dust, etc. into the impact of electronic devices sound and receiving, more likely to enter the internal and affect the internal circuit. Therefore, the sound permeability hole must be waterproof treatment, then according to the waterproof sound permeability film material, there can be waterproof sound permeability and breathable, waterproof sound permeability and breathable two categories, which should ensure that the sound can be transmitted through, the sound quality is basically unchanged, so in electronic products, according to the product application environment to choose breathable or breathable waterproof sound permeability film raw materials.