Bas science and technology limited. (referred to as "bascctv") was established in 2009. Professional network hd cameras, internet phone cameras, camera cards, dot-matrix infrared cameras, road surveillance cameras, megapixel ip speed?? Dome camera, ir speed dome camera, nvr systems, dvr systems, cctv and other r & d full line of products, design, production and sales of high-tech enterprises; committed to today's most advanced digital cameras, analog camera technology, dvr / nvr system technology successfully applied to the rapid growth of technology in the field of security and industrial control and other enterprises.