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The adjustment in duties on some advanced technology and equipment and key components will be done at an appropriate time, it said, adding that China will continue to implement duty-free treatment policies for imports from those least-developed countries and widen the duty-free treatment for more goods.

Heilongjiang, Beijing and Jiangsu ranked the top three provincial-level administrations in terms of the amount of government officials' microblog accounts.

Wang further pointed out that poverty and backward economic and social development is the soil for breeding pirate activities. " Solving piracy problem requires integrated strategy which deal with both symptoms and root causes," he said. "We calls on the international community to double its efforts and play a more positive role in eliminating poverty and achieving economic and social sustainable development in countries concerned."

BEIJING, May 4 (Xinhua) -- China and the United States on Friday agreed they would work together in optimizing the investment environment for companies in both countries.

The two sides will continue their cooperation on the peaceful use of nuclear power and step up their joint development and trade on natural uranium, the communique added.