Guangdong black dragon smart technology ltd. Is a whole industry chain company that combines smart locks for development, manufacture, sale, installation and sale. By virtue of its professionalism and maturity in the area of smart locks, companies have been awarded the state high-technology enterprise by focusing on fingerprinting and internet smart control. The development of technology and the continuous provision of high-tech intelligence locks to users is a constant pursuit. Hydron has the best autonomous r & d and technical support teams in the industry, as well as production centres for products produced on a scale, and now has more than 50 national patents. An autonomous intelligent family under the banner, heron black dragon, is mainly served by villas and smart districts. It is the country's first home network smart fingerprinting lock to be built on a scale. Black dragon technologies combines the experience of professional lockers over the years with leading technology levels to create micro-trust fingerprint locks that combine a sense of practicality with a sense of technology. The company has affiliated clients in 150 cities throughout the country, using more than half a million end-users. It is also subject to public scrutiny that perfects product quality。