Shenzhen RONG TIAN SHI Technology Development Co., Ltd is a professional high-tech enterprise which engaged in research, produce, and sell CCTV system products. We have the best engineers in this industry to design and research the products. CERTIFICATES: CE, FCC, ROHS, IP65, NATIONAL PATENT. Our main products including: 1. Intelligent IR High Speed Dome Camera ( patented ), 2. Intelligent IR Medium Speed Dome Camera ( patented ), 3. Intelligent IR Constant-speed Dome Camera ( patented ), 4. Network IR Intelligent Dome Camera, 5. Auto Temperature Control Type-IR Night Vision Integrative Camera (patented), Long Range ( single / double CCD ) and High Definition, 6. Network Infrared Camera, 7. and other patented products that are leading technologies in the industry. Our R&D plan is at least develop three new type products every year. Products of RONG TIAN SHI always