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China GrenTech Corporation Limited, together with its subsidiaries, engages in the manufacture and sale of wireless coverage products and services in the People’s Republic of China. Its wireless coverage products include repeaters, trunk amplifiers, and base station amplifiers, which supports various transmission protocols, including GSM, CDMA, TD-SCDMA, WCDMA, and CDMA2000. The company offers its wireless coverage products in the areas of indoor coverage, which distributes emission of radio signals from the base stations to cover the entire facility in indoor environments, such as high-rise buildings, underground areas, and elevators; and outdoor coverage, which provides wireless coverage in specified geographic and topographic regions that include highways, railways, subways, and tunnels. China GrenTech Corporation also provides wireless coverage services, such as design services, installation of wireless coverage products, and project warranties. In addition, the company develops, manufactures, and supplies RF parts and components, such as filters, duplexers, multi- frequency splitters, combiners and couplers, and antennae; RF-based wireless access products; and base station RF subsystems. It offers its wireless coverage products and services to telecommunications operators; and base station RF parts and components to base station equipment manufacturers. The company, formerly known as Powercom Holdings Limited, was founded in 1999 and is headquartered in Shenzhen, the People’s Republic of China.

China Mobile Communications is a wireless winner. With more than 450 million customers, it is the largest wireless network operator in the world in terms of subscribers (ahead of China Unicom at home and surpassing UK-based wireless giant Vodafone Group on the global stage). China Mobile Communications operates primarily through its publicly- listed operating subsidiary China Mobile Limited which provides wireless services under the GoTone and M-Zone brands in 31 regions of mainland China. In addition to mobile voice and data services in China, it offers international roaming access through agreements with network operators worldwide. The company is controlled by China's Ministry of Information Industry.

China Unicom (Hong Kong) Limited has brought competition to the world's largest telecommunications market. The Chinese government set up China Unicom in 1994 as the first competitor to another government-owned telecommunications monopoly. The state-controlled company provides long- distance, broadband data, and mobile communications services in 31 provinces, cities, and other regions throughout China. It is the country's #2 mobile phone operator behind former monopoly China Mobile Communications. Subsidiary China Netcom is China's #2 provider of fixed-line communications carrier behind China Telecom. It operates primarily in the northern provinces; major cities served include Beijing and Tianjin.

Clearwire operates a mobile broadband network that provides services to some 680,000 subscribers primarily in the US and Europe.Clearwire company offers such services as high-speed Internet access and computer telephony. Its service areas cover more than 60 markets located mainly along the West Coast and in Texas, Florida, North Carolina, and the Midwest. Clearwire serves international broadband users in Belgium, Germany, Ireland, Poland, Spain, and Mexico. In addition, wholesale partners resell Clearwire's services as part of their bundled branded offerings for subscribers. More than 85% of the company's sales come from the US.

COM DEV International Ltd company designs and manufactures a variety of space hardware subsystems, including microwave and optical components for use in communications, space science, remote sensing, and military satellites. COM DEV's equipment and instruments enable telecommunications services, geographic mapping, and pollution monitoring. The company's blue-chip client roster includes major aerospace and communications companies, such as Alcatel-Lucent, Boeing, Lockheed Martin, Mitsubishi Electric, Northrop Grumman, and Space Systems/Loral. COM DEV gets about 45% of its sales in North America.

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