DSPPA Audio Conference is a professional Conference audio manufacturer since *域名隐藏* more than 30 years’ history of designing and manufacturing conference products, DSPPA has enjoyed a high reputation in and out of *域名隐藏* logy innovations, strict quality and environment control (ISO 9001 & ISO14000)have made DSPPA to be the leading brand in the field of conference system. And now, DSPPA is widely recognized as the largest and most professional conference equipmentsupplier in China.