On May 31st, the plaque of national outstanding unit of the public service for overseas Chinese was unveiled. Zhao Zilong, director of Ji'nan overseas Chinese Affairs Office,Zhang Wenxin, deputy secretary of the Party committee of SDNU jointly unveiled the plaque and delivered speeches.The leading officials of United Front Department,Retirement Office and more than 10 members of Returned Overseas Chinese Federation of SDNU participated in the ceremony. The ceremony was chaired by the director of the United Front Department of the Party committee, Sui Wenhui.