Shanghai great world international travel service was found in 1982 . we are one of the highest grade travel services in china - category a travel service . and we are also the category a air ticket agency 上海大世界国际旅游公司建立于1982年,是中国最高等级的旅行社-国家一类社-之一,同时,我公司还是国家航空客运一类代理商,并有权自组中国游客出境旅游。