China Unicom
The China Unicom group had a special group structure to list its share. The group had a subsidiary China United Network Communications Limited () which its A shares were traded in the Shanghai Stock Exchange (), while an indirect subsidiary of the A share listed company, Hong Kong incorporated China Unicom (Hong Kong) Limited () listed its shares in Stock Exchange of Hong Kong as a red chip company () and in the New York Stock Exchange as American depository share (). The operating subsidiaries of the group were under China Unicom (Hong Kong). However, the group has subsidiaries that involve in equity investment, such as "China Unicom Group Corporation (BVI) Limited", which were not injected to either listed companies.