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China Tower Corp, a mobile communication infrastructure company that runs almost all of the country's telecom towers, signed a strategic partnership with China Post Group Corp on Monday, as the two State-owned enterprises seek to reinvigorate their businesses by sharing resources.

China National Petroleum Corp (PetroChina), the country's biggest oil and gas company, said on Monday that it has achieved a significant technological breakthrough, after successfully completing drilling work on the deepest oil well on land in Asia at its Tarim oilfield in the Xinjiang Uygur autonomous region.

China and the United States, both veto-wielding permanent members of the UN Security Council, have no option but to collaborate as the world is beset with challenges and disorder, including rising protectionism and populism, the lingering impact of the 2008 global financial crisis, and the spread of terrorism and refugee crises.

China and Brazil signed a memorandum of understanding on Tuesday to diversify service trade to upgrade their commerce structure from commodity and goods exchanges.

China and the United States currently constitute 60 percent of the company's sales, with Europe accounting for 30 percent, and the remaining 10 percent are shared by the rest of Asia, Africa, the Middle East and Latin America -- but not for long. The company expects Latin American sales to catch up with those of Europe.