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The two leaders also witnessed the signing of a series of cooperation documents after their talks.
China has strengthened its IPR protection with uNPRecedented intensity in recent years, said Zhang Zhicheng, an official with the National Intellectual Property Administration.
Noting that China and El Salvador are both developing countries and enjoy great potential for cooperation, Li said China is willing to enhance synergy of development strategies with El Salvador, and foster new highlights of cooperation in such areas as trade, investment, infrastructure construction, agriculture, forestry and fisheries.
Sun, also a member of the Political Bureau of the Communist Party of China Central Committee, made the remarks during a three-day research tour in Guangdong that ended Saturday.
He said it is necessary to improve the effectiveness of education and intervention, strengthen monitoring and early warning, and give better play to the role of social organizations in AIDS prevention.
来源：资阳报