Nowadays, increasing number of people start  to upgrade their car radio by themselves.  Sound insulation is essential for sound upgrading, and is also a guarantee for the quality of speakers. The first layer of noise insulation is applied to the door panel. At the audio line and speaker wiring,  we can heat the heat shrink tube for careful protection.

After used heat shrink tube to upgraded  the audio system,  car sound effects have perfect promotion.  The sound  is melodious, high pitched medium bass. No matter when you restore voice music or play DJ dance, you can make people feel the light before your ears.  

From the above method of upgrading the car sound, heat shrink tube is essential part to upgrade the car sound.  We can see the effect of heat shrink tube is indispensable in the  car industry. In the future, we believe heat shrink tube will be an increasingly wide utilization.