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China Telecom (Beijing) digital TV Development Co., Ltd. is established by vecast, USA, Inc. invested $5 million in 2004 to establish a wholly foreign-owned enterprise, specializing in the development of China's popular digital TV industry / triple play and new high-tech energy-saving materials business. Its triple play product lines include digital TV front-end system, intelligent network / SDH transmission equipment, American and European standard CABLEMODEM, digital TV set-top box (MHP), SMS network management, middleware and other software products Products, as well as optical energy-saving nano ceramic film, vacuum coated glass and other new energy-saving materials. Vecast was founded by IDN Telecom Company in Silicon Valley, California, USA. IDN is mainly engaged in the research of basic telecommunication theory and the development of high-tech products. Slm-1920, an optical fiber digital loop system invented in the early 1990s, pioneered the world's high-capacity optical fiber digital access network. Since then, the signaling control chip and chipset of SPC telephone exchange, sdhstm-4 / atmoc-12 single-chip module product, ethe The theory of tunnel interface, V5.2 standard control module and application system, idn-2000acn access network system and ACN theory research play an important role in the development of broadband integrated access in telecommunication industry; The video conference system IVC based on MPEG-2 / IP multicasting, the office end and user end equipment of MCU / etnlayer2 / layer3 switch e.dsl (ADSL / SHDSL / VDSL), as well as the cooperative products - intelligent optical switch and dense wave division multiplexing, etc. have made important contributions to the development of the global and Chinese telecommunication industry. Over the years, IDN has provided basic telecommunication equipment for more than 60 cities in the world, and provided a large number of technical, product and service support for telecommunication operators, government informatization and manufacturing industry. IDN has many cooperative, joint venture or sole proprietorship enterprises in Beijing, Shanghai and other cities in China to develop IDN's business in China and support China's informatization process. With IDN's abundant basic telecommunication theoretical resources, technology, operation and advantages in chip, software, system, service, market, investment, finance and other aspects for many years, China Telecom has established a certain market position in the development of digital TV front-end system, network intelligence, MHP set-top box, CABLEMODEM and other aspects since its establishment. Through the development of enterprise strategic alliance, company acquisition and OEM, China Telecom integrates and strengthens its foundation and ability in technology research and development, manufacturing, sales, supply, logistics, storage, service and other aspects of digital TV front-end system, CMTS, CABLEMODEM, set-top box, etc. Through the effective utilization of resources such as technology, manufacturing, market and product integration, it has been able to carry out the three network integration full business based on radio digital TV through the HD digital set-top box on the two-way network. After 2009, China Telecom began to march into the field of high-tech energy-saving materials, gradually realizing the development in two fields, and further strengthening research and development, production and market investment in new energy-saving materials according to market needs.

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