R&D expenses totaled 146.45 billion yuan ($20.5 billion), up 16.1 percent year-on-year, according to the latest report by the Beijing Municipal Bureau of Statistics.

The total revenue of large high-tech enterprises in Zhongguancun was close to 3.707 trillion yuan, an increase of 12.5 percent over the same period last year, according to the bureau.

These enterprises employ a total of 622,000 R&D personnel, up 1.3 percent year-on-year.

Statistics indicate that the fields of electronics and information, new materials and applied technology, and advanced manufacturing showed good growth momentum, with year-on-year growth of 14.5 percent, 10.2 percent and 14.1 percent, respectively.

Zhongguancun, established in 1988 and located in northwestern Beijing with clusters of universities and research institutes, was the first national high-tech industrial development zone.