Microsoft 'not fully open with sales data'

A Chinese antitrust regulator said on Tuesday that Microsoft Corp has not been fully transparent with its sales data on the software it distributes in China, including information on sales of its media player and web browser software.

Zhang Mao, head of the State Administration for Industry and Commerce, said in Beijing that Microsoft has expressed willingness to cooperate with ongoing investigations.

"After multiple meetings, including at high levels, they've expressed a willingness to respect Chinese law and collaborate with investigating officials," Zhang said.