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A visit to China's secretive tech giant

Huawei Technologies employs more people than either Cisco or Microsoft, and its telecom systems connect a third of the world's mobile phones.

But in the west, the secretive Chinese technology giant has yet to gain those companies' brand recognition.

The firm says it is 100% employee-owned, and has shrugged off claims by critics that it is linked to the People's Liberation Army.

Nick Mackie takes a rare look inside the company's research and development facility in Shenzhen, southern China.

Special report: The Technology of Business

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