It can be said that the sound insulation performance of a door and window depends on three aspects. The first aspect is whether the profile used is a composite profile. See if its sealing material is integrated primary or post-wear. The integrated primary sealing material is much better than the material bag at the back end. It is also more important to see what kind of glass is used in this door and window. If it is insulating glass, then it can only be used as insulating doors and windows. If it is a professional-grade sound insulation glass, then it can, er, play a certain role as a soundproof door and window.