China accomplishes survey and mapping of Qinghai-Tibet Railway with high-precision

Consider how important the Qinghai-Tibet Railway to the Chinese government, there is no way they would allow a foreign company to conduct the survey, not matter the cost. CCTV has a different take on this news, it stated that the survey is for the entire Tibet region not just the railway. China accomplishes survey and mapping of Qinghai-Tibet Railway with high-precision(Source: PLA Daily)