The most famous companies that grew up in Zhongguancun are Stone Group, Founder Group, and Lenovo Group. They were all founded in 1984-85. Stone was the first successful technology company to be operated by individuals outside the government in China. Founder is a technology company that spun off Peking University. Lenovo Group spun off from Chinese Academy of Sciences with Liu Chuanzhi, a hero of Zhongguancun and current Chairmain, eventually taking the helm. Lenovo purchased IBM's PC division with $1.75 billion in 2005, making it the world's third-largest PC maker. Both Founder and Lenovo Group maintain strong connections to their academic backers, who are significant shareholders.

According to the 2004 Beijing Statistical Yearbook, there are over 12,000 high-tech enterprises throughout Zhongguancun's seven parks, with 489,000 technicians employed.

The development center of Loongson, which is China's first general-purpose microprocessor design, is also in the Zhongguancun area.[3

aigo (Chinese: 爱国者; literally meaning "patriot") is the trade name of Chinese consumer electronics company Beijing Huaqi Information Digital Technology Co Ltd.[1] aigo should not be capitalized, much like "iPod".

aigo Music

Established in 1993 and located in Beijing,[6] aigo Music operates a digital music service much like iTunes.[7] The first of its kind in China, it is, as of 2009, the biggest portal for legal downloading of music in the country.[7] Strategic partnerships with Warner Music,[8] EMI and Sony[9] allow a wide range of music to be offered at 0.99 yuan per song.[8][9]

Zhongguancun is China’s closest equivalent of Silicon Valley. The caveat is because there’s a lot happening elsewhere in China too. China’s three Internet giants are Baidu, Alibaba, and Tencent, but only search giant Baidu is headquartered in Beijing.