Google has kept its research and development unit and some sales teams in the Chinese mainland. Also, all five mainland companies Google has invested in are still in operation.
Yu Guofu, a member of the Policy and Resource Committee of the China Electronic Commerce Association, said Google's partners are mainly web portals out-sourcing part of their operations to search engines and businesses looking for promotion through publishing their key words.
Yu said it is unlikely for web portals to continue cooperating with Google as they normally need partners that are reliable and easy to contact.
Cooperation with the other type of partners would also be affected as fewer web portals would be putting in links to Google, Yu said.
Hu Yanping, director of the Data Center of the China Internet, also believed Google's major cooperation with mainland businesses would fall apart.
"It will be difficult for mainland companies to advertise themselves through the Hong Kong-based Google," Hu said.
Some advertisers in the mainland have said they are considering to turn to alternate platforms for advertisements, including well-known advertising agency the Ogilvy and Mather.