slow resilience with PU foam, abatement on the noise, and protection hurt on your ear by noise. Slow resilience of PU foam

 

1)Quality advantages: the quality of products is higher than other companies, the slow rebound material to restore a long time, stable and reliable quality, environmental health.

 

2)Efficacy noise value (NRR) 30 dB, the surface smooth, the treatment can be cleansing, wearing health, safety, soft, comfortable, good sound effects. Effects of noise: 30 dB.

earplug