1. The sealing function prevents water or air from entering, which affects the cooling and heating effect of the air conditioner; For example, air door sealing, sealing between the core and the shell, firewall sealing, etc;
2. The insulation function isolates the transmission of external temperature, ensuring that the temperature is not affected by the engine temperature; For example, evaporator sponge, condenser sponge, refrigeration pipe cover, etc;
3. The sound insulation and noise reduction function reduces noise transmission and improves driving comfort; For example, the shell is covered with sound-absorbing sponge, etc;
4. The shock absorption function reduces the transmission of vibration and improves driving comfort;