TELEFÓNICA INTERNACIONAL, S.A.U. AND CHINA NETCOM GROUP CORPORATION (BVI) LIMITED SUPPLEMENTAL AGREEMENT TO THE SHARE PURCHASE AGREEMENT FOR THE SALE AND PURCHASE OF SHARES IN CHINA UNICOM (HONG KONG) LIMITEDSupplemental Agreement • August 1st, 2012 • CHINA UNICOM (HONG KONG) LTD • Radiotelephone communications
