In corporate using SPON professional audio system such as IP POE intercoms ,IP POE speakers ,IP Alarm Matrix ect. , you can receive background music playing , emergency alerting an...
Changsha SPON Communication Technology Co., LTD was established in 2004 with over 20000 Square meter workplace . It is a national high-tech enterprise which has own core intellectual property and innovative research & development capabilities. We have rich experience in IP video and audio products and PA system products.