The Shanghai 2010 World Expo organizer signed cooperation deals on October 13 with nine Yangtze Delta cities-Changzhou,Yangzhou,Zhenjiang and Taizhou in Jiangsu Province,and Nantong,Huzhou,Jiaxing,Zhoushan and Taizhou in Zhejiang Province-for Friendship Day during Expo. Yang Xiong,Shanghai Executive Vice Mayor and executive deputy director of the Ex-
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