Dear Manager: Our company is an industry leader in the design, development and production of high quality security systems and components. Our products are included dvr card,digital video recorder,video capture card, camera lenses, ccd and some other surveillance system products. Our products are included Kodicom,Pico2000,WDT,and Avermedia series.Also we support OEM service.If this not interesting you, we can produce products according to you special requirement. You can gain more information from our website www.yishi.net.cn Hope we can cooperate!