DADI Telecommunication Equipment Co., Ltd, established in 1992 in China, is a state-certified high-tech software enterprise. It develops and manufactures advanced communication testers, equipment and software. DADI is the unique communications testing enterprise that can produce the highest authoritative military standard products in China. The products of DADI include Ethernet Analyzer, Cable and Network Tester, XDSL Tester, SDH Transmission Analyzer, BER Tester, Data Transmission Analyzer, Storage Battery Tester, Signaling Protocol Analyzer, PCM Analyzer, OTDR, etc. DADI owns the independent intellectual property of all its products, which have been researched and developed independently by itself. DADI has 3 bases: DADI Research Base, located in Beijing Research Institute, Zhongguan Village, is equipped with advanced scientific instruments and equipment and is specialized in research and development of advanced technology. DADI Manufacture Base, corporate headquarters, is located in the High-tech Zone of Liuzhou City, covering an area of 18,000 square meters and a building area of 8,000 square meters. It is a modern production base with a good capacity of scientific research, production and testing. DADI Business Centre, located in Beijing, is equipped with high-quality sales staff and technical support personnel. It has already established a nationwide sales network. DADI attaches great importance to the introduction of new technology and new product research; the company has more than 40 experienced engineers, many of whom are experts in this field. It has a long-term plan to employ domestic well-known experts and scholars as the company's technical advisors. Moreover, the company has established long-term stable cooperative relationships with some famous universities in Beijing, so that its products have improved to a higher level. DADI attaches great importance to the quality of products and services; the entire process of the products includes research & development, production, testing and services which are subject to strict management of quality and environmental management system. The products of DADI have passed the CE certification and the FCC certification. The DADI Motto is: Quality is the personality that is embodied in the product.