Cantonk Manufacturer--Your Reliable CCTV Supplier "Reliable Digital Security Solution Provider" --About Company Cantonk Corporation Limited is a leading and professional CCTV manufacturer located in Guangzhou, China, and we are specialized in researching, producing and selling CCTV Cameras and Stand-alone DVRs with providing the most stable digital security solutions. Till now we have had products ranges including HD-SDI Cameras, Indoor and Outdoor cameras, PTZ Cameras, HD-SDI DVRs with ...