Describe your activity
PCM multiplexer,PDH multiplexer,telephone optical multiplexer,E1 failover switch,fiber optic equipment factory in the name of Guangzhou Yinxun Comm.Tech.Co.,ltd abiding by ISO 9001-2000 guideline
PCM multiplexer,PDH multiplexer,telephone optical multiplexer,E1 failover switch,fiber optic equipment factory in the name of Guangzhou Yinxun Comm.Tech.Co.,ltd abiding by ISO 9001-2000 guideline