Characteristics: * 1. Installation temperature recommended: -10 C ~ + 60 C, resistance temperature range: - 40 C ~ + 149 C * 2. Mousse sound insulation can be installed on the car to reduce vibrations and shocks * 3. Reduce the ambient wind, road noise and engine noise * 4. Flexible, unbreakable, non -toxic , fragrance without (odorless), forming a layer resistant to mold and humidity. * 5. It can evenly distribute the heat of the engine to prevent the cover from overheating. Keep your car cool in summer and hot in winter * 1. Material: rubber + plastic * 2. Form: Square * 3. Resistance to flexion: Strong * 4. Compression resistance: strong * 5. Form: fiber * 6. Size: 200x50cm * 7. Thickness: 3mm/6mm/10mm Note: * 1 . This product has a strong adhesive. It can be directly glued to room temperature above 0 without additional heating. * 2. The higher the outside temperature, the more the solid structures which cannot be removed after the dough is very solid! * 3. Noise experts suggest that they do not forget the vibration of the door while making acoustic insulation materials. Before sticking the acoustic absorption sponge, you can display certain vibration plates with an excellent effect. Generally, you must be about 10 meters from the car to three compartments as a whole. * 4. Special remark: if the owner of the car likes the noise of the engine, you want to completely reduce the noise of the engine to the hood. The noise effect of the U-shaped slit requires the use of a sound insulation cotton in aluminum sheet + aluminum plate, butyl rubber damping plate (approximately 18-25). The noise of the engine is a very complex engineering sound. You must operate the acoustic insulation for the wings, the firewalls and the slots of the dashboard in the shape of a u! The package includes: 1 x roller sponge absorbing sound