Cantonk (Guagnzhou) Co.,Ltd. established in 2008 and based in Guangzhou,China.the globally leading provider of innovative CCTV surveillance video products and solutions. Cantonk now is the top ten largest manufacturer in video surveillance in China. Cantonk have more than 1,200 employees, over 200 are Professional R&D engineers.have established a completed, multi-level R&D system that including research to design & PIE, development, testing, technical support, and service all provided.have a long experience of working on R&D and application,integrated product lines including HD IP camera, HD CCTV camera, PTZ Camera, HD NVR, HD XVR etc.Cantonk company annually invests 6% of annual sales revenue to research and development for continued new CCTV Camera systems are applied in over 130 countries and regions field such as public security, traffic, retail, banking & finance, and energy etc Looking forward to our better future,Cantonk will continue to provide better and more excellent video security products and solutions.