![](../UploadFile/UploadPhotos/20171281564692.jpg)
1D Diffusion
In 1983.RPG Diffusor systems.Inc.introduced the first commercial sound diffuser that offered uniform scattering over a designable bandwidth.The QRD has now been used in thousands of project in awide range of venues.
Copyright ? Jiangmen Jian Sheng Sheng Xue Cai Liao Co., Ltd All Rights Reserved. 粤ICP备17009887号