"Contact Us." Sohu. Consultado el 27 de diciembre de 2010. "Headquarter Office Sohu.com Internet Plaza, No.1 Park, Zhongguancun East Road, Haidian District, Beijing 100084, PRC ."
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"Contact Us." aigo. Consultado el 25 de julio de 2013. "aigo Digital Technology Co., Ltd. Add: 10-11th Floor, Ideal Plaza, No.58, West Road, North 4th Ring Road, Beijing, 100080, China" Chinese address: "北京市北四环西路58号理想国际大厦11层"
