Nine Chinese science and technology are a High-tech enterprise, the specialty are engaged in the research and development, the production, the sale, the industry communication network product, devotes into the international first-class industry correspondence expert, this company develops the product has the advanced technology, has the proprietary intellectual property rights, each performance index is in the domestic and foreign advanced standards, provides the performance-to-price ratio and the stable high serial port RS232/485 correspondence solution, the serial port equipment networking TCP/IP solution to the customer, G.703-E1 protocol converter, PDH and industry ethernet switchboard solutions and so on digital video light end machine. The company gathered the domestic first-class serial port correspondence, the optical communication and the network service technical expert, and with each big university, the scientific research institution and so on carries on the technology clasp. The company product widely applies in the electric power, the telecommunication, the transportation, the metallurgy, the environmental protection, the industrial automation control system, the long-distance computer supervisory system and in a cartoon An Fang entrance guard system, the checking attendance management system management system, the expense system, the parking lot system, the Self-help bank system, the video frequency supervisory system and so on the change numerous and diverse informationization environment, is deep the user faith. The company since was established, continues maintains the fast growth, had already completed the domestic electric power, the orbital transportation, the industrial automation, the environmental protection, cartoon An Fang and so on many domain significant classical project applications. The sales network is covering from China to the Middle East, Southeast Asia, global areas and so on Europe, Americas, Africa management idea: Corporation in line with “take the guest as first, humanist” is the management idea, take “the quality first, the prestige first, serves first” as the company objective. Nine Chinese science and technology were insisting their objective, innovate unceasingly the development, harmonious paragenesis, what comprehensive, is highly effective is the user community provides the high quality service.