PC maker Lenovo Group says it is dividing its business in two. An internal email from CEO Yang Yuanqing said that starting from April 1 Lenovo would set up Lenovo Business Group to focus on the mainstream PC, laptop and tablet market, while leaving the high-end and corporate business to Think Business Group. The restructuring was aimed at streamlining operations and management to better fit the group's expanding business around the world, Yang said.