Beijing Netbase Optical Electronic Technology Co., Ltd. is a professional manufacturer, which is specialized in the research, innovation and production of video, audio, and data optical communication products. Our company was established in March, 1994. Its core technology competence and comprehensive transmission capabilities of multiplexing facilities occupy an advanced position domestically .Our main products are as follows: Video , audio, data and Ethernet optical transmission facilities , supporting fully digitally encoded multi-transmission of 1~64 video , 1~128 audio , 1~128 data , 1~256 contact closure, 1~4 Ethernet , 1~16 E1, 1~64 telephone over one single-mode optical fiber . Our products are widely used in surveillance, video and audio communication in the field of public security, road traffic, railway, oil field, mine, military and so on. We firmly believe that, excellent integrity and perfect quality play a key role in the success of business. We are always devoted in providing our customers with both the best products and the high-quality service. xxxxx Email contact : skype:sara5121 xxxxx