Europe's largest engineering company Siemens said its environmental portfolio would generate order intake of 4 billion euros in China in 2010.

This equates to 40 percent of the company's total orders in China for 2010, said Richard Hausmann, president and CEO of Siemens China.

"More than half of our 1 billion euro mid-term investment in China until 2010 will go into energy-saving and environmentally friendly technologies and solutions," said Hausmann.