In 2009, China Unicom (Hong Kong) agreed a US$1 billion cross-holding with Spain's Telefónica. In January 2011, the two partners agreed a further US$500 million tie-up in each other, which following completion in late 2011, Telefónica will hold a 9.7% shares in China Unicom (H.K.), while the red chip company will own 1.4% shares of the Spanish firm. The companies also agreed to deepen their cooperation in areas such as procurement, mobile service platforms, service to MNC's wholesale carriers, roaming, technology, among others, where both companies have been cooperating since the signature of their strategic alliance agreement.