switching matrix,digital video optical transceiver,Conference call system,Audio-visual information comprehensive control system...

Room 203, 202,South Jia Sheng Ao Mei Building,No. 262, West Laodong RD., , Changsha, Hunan, China

Hunan Shuangln Electronic Technology Co., Ltd. was officially approved and registered by the government in 1996, which is specialized in researching and developing television and broadcast products, h...