[Page iii Certain Definitions iv PART I 1 Item 1. Identity of Directors, Senior Management and Advisers 1 Item 2. Offer Statistics and Expected Timetable 1 Item 3. Key Information 1 Item 4. Information on the Company 16 Item 4A. Unresolved Staff Comments 44 Item 5. Operating and Financial Review and Prospects 44 Item 6. Directors, Senior Management and Employees] [List of Significant Subsidiaries Name of Subsidiary Country of Incorporation Ownership China United Network Communications Corporation Limited China 100 % China Unicom (Hong Kong) Operations Limited Hong Kong 100 % China Unicom (Americas) Operations Limited 100 % China Unicom (Singapore) Operations Pte. Ltd. Singapore 100 % China Unicom (Europe) Operations Limited United Kingdom 100 % China Unicom (Japan) Operations Corporation] [Certification I, Chang Xiaobing, certify that: 1. I have reviewed this annual report on Form 20-F of China Unicom (Hong Kong) Limited; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [Certification I, Li Fushen, certify that: 1. I have reviewed this annual report on Form 20-F of China Unicom (Hong Kong) Limited; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [Certification Dated: April 25, 2012 Chang Xiaobing Chief Executive Officer] [Certification Dated: April 25, 2012 Li Fushen Chief Financial Officer]