( CNN ) -- Huawei has given up its quest to conquer the market for telecom network equipment in the US , where the Chinese company 's sales efforts have been repeatedly blocked by security fears . `` We are not interested in the US market any more , '' Eric Xu , executive vice-president , said at the company 's annual analyst summit on Tuesday . The world 's second-largest supplier of network gear by revenue has shifted the focus of expansion away from the US over the past year . Huawei 's decision ends an aggressive push for business in the world 's largest economy . US security officials and politicians have repeatedly identified Huawei as a threat to US national security -- an allegation the Chinese company has consistently denied . Although Huawei has done business with 45 of the world 's top carriers , it failed to get contracts from any leading operators in the US . Last month , Sprint Nextel , the third largest US mobile network operator , and its Japanese suitor , Softbank , both gave assurances to the House intelligence committee that they would not use Huawei equipment . In October , a US congressional report officially branded Huawei and ZTE , its smaller Chinese peer , a threat to national security . At the time , Representative Mike Rogers , chairman of the House Intelligence Committee , called on the US government and private sector companies to shun Huawei and ZTE . Despite its success in other markets , including the UK , Huawei has struggled in the US for years because of concerns among politicians and security officials about the military background of its founder Ren Zhengfei , a former People 's Liberation Army officer . In 2008 , Huawei retracted a bid for 3Com , a US technology company , after it emerged that the proposed deal would not gain regulatory approval in Washington . Two years later , Huawei bid for a multibillion-dollar contract to supply network infrastructure to Sprint Nextel , one of the top US operators , but lost after the US government intervened . It also failed to win bids for other US telecom assets and , in 2011 , was forced to unwind a $ 2m deal to buy patents from a US company . In response to these setbacks , Huawei launched a major US lobbying campaign . It hired a number of senior executives from ailing rivals such as Nortel and Motorola , in an effort to build a big research and development presence . Ken Hu , a senior Huawei executive , also wrote a passionate open letter calling on the US government to launch a formal investigation , which he believed would clear his company . But October 's congressional report made it even more difficult for the company to do business in the US , Huawei executives say . As a result , it has halted its expansion there . While Huawei still employs 1,400 people in the US , its R & D headcount has dropped from 800 to 500 , and the sales team has shrunk too . Executives at the company 's consumer and enterprise business-groups said they no longer consider the US to be a strategic market . Huawei on Tuesday also revised downwards the long-term outlook for its enterprise business , its youngest but fastest-growing division . William Xu , the unit 's chief executive , said its goal of generating $ 15bn in revenues from the business by 2017 -- a target set just last year -- was `` too optimistic '' . The company is now aiming for just US $ 10bn . But Mr Xu still expects the unit 's revenues to grow 45 per cent this year , up from 25 per cent growth in 2012 .
China 's Huawei has ended attempts to gain access to U.S. telecoms gear market . U.S. officials have argued Huawei is national security threat ; Huawei has denied . Huawei is world 's second largest supplier of network gear . Chinese firm failed to secure contracts with any leading U.S. telecoms operators .