Juan Optical & Electronical Tech Co., Limited has Strong technical development strength, as we have a professional R&D team, more than 20 people, of which 80% has master degree. We have conducted in depth cooperation with the well-known foreign chip suppliers. Our company independently R & D standalone DVR.Based on the strong technology, perfect wholesale, retail and repair service system, our products have been widely used in finance, electricity, telecommunications, transportation, prisons, education, government departments, as well as factories, supermarkets and other fields. I