GUANGZHOU YUE TONG ELECTRONIC TECHNOLOGY.,LTD(Public Address System Manufacturer & Supplier)we can supply public address syste ,fire broadcast&neighbor-channel activation,Emergency Broadcast; channel Paging/Control ;Programmable Timing Broadcast& BGM ; Tel Conference Boosting;Outdoor/ Grass Broadcast ect.CE,CB & CCC approvaled, welcome for OEM! Please refer to our website for more information and more models, thank