The total technical staff working in Zhongguancun Science Park reached 402,000 last year as investment in high-tech sectors hit 91.8 billion yuan ($15 billion), according to the latest Zhongguancun Index released in September.

The index showed that for every thousand employees in the park, an average of 253.7 were technical staff.

With investment in research and development in Zhongguancun 5.3 times the rate of the whole country, nearly 40,000 patent applications were filed last year in the area, 43 percent of the total in Beijing. Among them 22,632 were granted, 44.8 percent of the total.