1. Strength. The sound-absorbing material must meet certain mechanical strength, so as to maintain the structural integrity in the process of handling, installation and use, durable and not easy to age, thus affecting the sound-absorbing effect;

2. The material is easy to be processed, installed and maintained in the later period. In the stadiums with large span, light materials such as sound absorbent cotton and space sound absorbent are usually adopted with low density;

3. Safe and environmental protection, sound-absorbing materials in the construction and installation project will not be scattered, fall off debris dust, volatile toxic and harmful gas (formaldehyde) radiation harmful substances, harm human health, this requires sound-absorbing materials should have an authoritative product test report.

4. Sound-absorbing material is more of a decorative material in addition to meeting sound-absorbing requirements. For places such as cinemas, multifunctional halls, venues, theaters, etc., sound-absorbing materials adopted need to have decorative effects to satisfy aesthetic effects.