Address：No. 702, Shanhe Road, Chengyang District, Qingdao
113-102,
Tel:0086-532-85830937
Fax：0086-532-85830937
E-mail：qdfysx@163.com qdfyzh@vip.163.com
Online consultation：
Sound cloth
Release time：2021-03-02 
The average transmission coefficient of 100Hz ~ 5000Hz is 0.93, which perfectly combines acoustic products with interior decoration.
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