China is encouraging investment into the United States, but is also urging the world's largest economy to improve its investment environment and reduce barriers.

China has so far invested "more than US$900 million" in the US non-financial sector, and is encouraging and assisting more domestic enterprises to inject funds "in all areas", Chen Jian, vice-minister of commerce, told a news conference on Monday.

"We have no specific goal (on volume of the investment)", but "we expect the US could improve the investment environment to attract more investment from China, and to strengthen China-US economic relations", he added.

The amount is just a fraction of China's total overseas investment of US$56.5 billion in 2009, despite the huge trade volume between the two largest global economies.

Chen said that in the next five years, China's outbound direct investment (ODI) will make huge strides, both in size and quality, and consequently its contribution to GDP growth will rise significantly and boost the nation's global influence as an investor.

While the Chinese government has been urged by the US and some European nations to allow its currency to rise, Chen said ongoing yuan revaluation will have a positive effect on Chinese overseas investment, although he believed currency appreciation will hurt exports.

The ministry on Monday launched its 2010 Report on Development of China's Outbound Investment and Economic Cooperation. In 2009, China's ODI reached US$56.5 billion, catapulting the nation to fifth largest, by volume, from 12th position. From 2002 to 2009, China's ODI grew by 54.4 percent annually.

"China's overseas investment activities are still at a fledgling stage, despite the rapid growth," Chen said. Chinese companies' lack of experience in internationalization and management curtailed high-end investment, he added.

Song Hong, a researcher on international trade with the Chinese Academy of Social Sciences, said China's ODI is expected to grow more rapidly than direct foreign investment and will hit US$100 billion by 2015.