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Hu also briefed participants at the summit on China's stance and policy on nuclear security.
Hu said China has made vigorous efforts to build nuclear security capacity, honoring international nuclear security obligations, valuing and taking an active part in international cooperation on nuclear security, and actively providing nuclear security assistance to other developing countries.
He said that in recent years, China has provided assistance to other countries in the region through technology demonstration and personnel training.
Hu reiterated China's firm commitment to a nuclear strategy of self-defense and its adherence to the policy of no-first-use of nuclear weapons at any time and under any circumstance.
The two-day summit focuses on the international threat of nuclear terrorism and illicit trafficking of nuclear materials. Participants included heads of state, government leaders and representatives from 47 countries and heads of international organizations.