SYDNEY, Sept 6 (Reuters) - Pressing institutional and structural problems are constraining China's economic development and "arduous efforts" are needed to maintain good growth, Chinese President Hu Jintao said on Thursday.

"There are still some pressing institutional and structural problems which constrain China's economic development and need to be addressed," Hu said at the Asia Pacific Economic Cooperation meeting in Sydney.

"For instance, there is imbalance in international payments, pressure on resources and the environment is mounting, and there is an urgent need to conserve energy and cut pollutant discharge. We still need to make arduous efforts to make sure that China's economy continues a steady and fairly fast growth."

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