A Foreign Ministry spokesman on Wednesday called on the US presidential candidates to do more things conducive to mutual trust and cooperation, denying that China is a "currency manipulator."

Spokesman Hong Lei said at a daily press briefing that China's GDP ratio of current account surplus has gradually decreased, supply and demand in the foreign exchange market has gradually balanced and the exchange rate has also entered a state of equilibrium this year.

China will continue to promote the reform of the RMB exchange rate formation mechanism on the basis of the initiative, progressive and controllable principle, according to Hong.

"We hope the US Republican and Democratic candidates will get rid of the impact of election politics and do more things conducive to China-US mutual trust and cooperation," he said, stressing that this is also in line with US interests.

US Republican presidential candidate Mitt Romney repeated his pledge to declare China a "currency manipulator" if elected at his second debate with President Barack Obama on Tuesday.

Chinese products' intellectual property rights, Chinese companies' investment in the United States and some other issues regarding China have also become hot topics in the election.

Hong urged "relevant personnel" to truly understand that the China-US economic and trade relationship is mutually beneficial so as to deal with relevant issues on the basis of mutual understanding and respect.

"We believe that China's development is an important opportunity for the United States," the spokesman said, stressing that, as two important countries in the world, China and the United States share many common interests and responsibilities.

Hong called on the US side to constantly enhance mutual trust and cooperation between the two countries so as to promote bilateral ties and world peace, stability and development.