Changsha Spon Communication Technology Co., Ltd. is a the national largest manufacturer of IP network internal communication intercom system!SPON Communication Technology Co., Ltd, has been a high-tech enterprise specialized in R&D for the digital network audio products, manufacturing equipment and system integration for many years. The headquarters is located in the Changsha national high-tech development zone, with the branches in Toronto (Canada), Beijing, Shanghai, Shenzhen, Xian and Kunming etc. Changsha Spon Communication Technology Co., Ltd. is a the guider of Chinese IP network broadcasting and internal communication, with the most complete production line for IP network internal communication. The successful project is involved in various industries, and approved widely by the industry, financial and military field. The company abides by the ISO9001 quality control system management strictly, and the core products all have passed the CCC, CE, MA certifications. SPONs goal is to manufacture the highest quality IP network internal communication products, and try to be the first leader of the IP network internal communication system around the world.Feature products:IP network AUDIO technology platform with the independent intellectual property rights;IP network Public Address System;IP network intercom communication system.