External use muffle is the device with first-rate effect of a kind of amortization, need when environmental element more when the noise of the bottom, add more please use.

• 上海万鑫机电有限公司生产供应风机消音器。外用消音器是一类消音作用特别好滴装置,当周围的环境要素需要更底的噪声时,请多加使用。