Gordon Brown has told the BBC there is a "huge opportunity" for British businesses in China, on his first visit to the country as prime minister.
He said trade was not "one way" - while Britain would import more goods, it would export its financial services.
He and Chinese premier Wen Jiabao have agreed to boost trade by 50% by 2010. Mr Brown has also offered China £50m to help the country tackle climate change.
Opposition leaders have urged the PM to raise the issue of human rights.
Speaking to reporters after talks in Beijing, the two leaders confirmed they had agreed a joint target of increasing two-way trade to $60bn (£30bn) over the next two years.
'Biggest market'
Mr Brown also said he wanted Britain to be the "number one destination" for Chinese businesses to invest - and hoped 100 new Chinese companies would invest in the UK by 2010.
Later he told the BBC: "It's not one way, there are imports into Britain but we are selling China banking, services, financial services, luxury goods, environmental technology, sports goods - a whole range of things."
China must both address its own human rights record and uphold the values of the United Nations
Nick Clegg
Lib Dem leader
"Yes, we will see more manufacturing jobs lost and done outside Britain, but yes also we have got the skills, the ingenuity, the social security budget and the high-value added goods and products produced offshore that we can now sell to what is the biggest consumer market in the world."