BSI Security Group Co., Limited, a hi-tech enterprise in Shenzhen, is specializing in Research, development and manufacturing of video security system for more than 5 years. With CE, FCC, RoHS, IK10 and ISO 9001, more than 260 workers with professional skills and engineers with leading technology, our business are spreading every corner in the world.our product line are divided into eight categories:IP camera, NVR, DVR card, USB camera, DVR, HD-SDI, USB DVR and Accessories. We are experienced.we provide not only products also solution.we have been provide suggestion and solution for about 202 schools, shopping malls, communities, traffic application, hospitals, factories, mines, harbors and so on. We provide perfect service.with patience and specialized knowledge, we have been good partner of thousands of customers. With products of wide range, rich know-how and thorough service, we try our best to meet your requirement, to solve the problem you may meet, to make a deal. Be passionate, Be progressive, Be successful!