Lenovo Group, the world's No.4 PC brand, said mobile Internet products will account for 10-20 percent of revenue in five years, as it embarks on a new drive into wireless computing.

The company hoped to sell millions of its new line of smartphones initially, and tens of millions in the future, said President and Chief Operating Officer Rory Read at a media briefing on Monday, without giving details.

The mobile Internet device market would overtake traditional PCs in the next five years, Chief Executive Yang Yuanqing, said as the company launched new mobile Internet products at an event in Beijing.

After selling off its cell phone unit to focus on its core PC business, Lenovo bought back the unit last year as part of its aim to become the Chinese market leader in mobile communications, as the sector starts to converge with PCs.