It takes some time for China to gradually address its trade imbalance on the international market, Chinese top banker Zhou Xiaochuan said Monday.

China has taken a number of measures helpful to boosting import, such as adjusting foreign exchange rate and importing a great deal of raw materials, said Zhou, governor of the People's Bank of China, the central bank.

The factors of rising production cost, increasing labor payment and improving social security are in a whole exerting impact on China's import and export balance, Zhou told a press conference held on the sidelines of the annual session of the National People 's Congress (NPC), China's top legislature.

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