China Brazil
Brazilian Minister of Finance Guido Mantega (L) and Chinese Minister of Finance Lou Jiwei smile after signing a memorandum of understanding between the Ministry of Finance of the Republic of Brazil and Ministry of Finance of the People's Republic of China on Bilateral Cooperation in Macroeconomic, Fiscal and Financial Policies at the 5th BRICS Summit in Durban, March 26, 2013. REUTERS

China and Brazil agreed to trade in each other’s currencies just hours ahead of the BRICS summit in South Africa.

The deal, which extends over a three-year period and amounts to an exchange of about $30 billion in trade per year, marks the latest effort among two of the world’s largest emerging economies to shift the dynamics of international trade that have long favored the U.S. dollar.

"Our interest is not to establish new relations with China, but to expand relations to be used in the case of turbulence in financial markets," Brazilian Central Bank Governor Alexandre Tombini said, Reuters reported.

By shifting some trade away from the U.S. dollar, the world’s primary reserve currency, the two countries aim to buffer their commercial ties against another financial crisis like the one that resulted from the collapse of the U.S. housing market bubble in 2008.

"Trade ties between China and Brazil are of great importance to the two countries' economies amid global woes and the member states' economic stability is vital for the BRICS mechanism," said Zhou Zhiwei, a researcher with the Chinese Academy of Social Sciences, Xinhua reported.

Trade between China and Brazil has exploded in recent years from $6.68 billion in 2003 to over $75 billion in 2012, and in 2009, China replaced the U.S. as Brazil’s main trading partner.

The trade deal comes before a summit of the BRICS nations (Brazil, Russia, India, China and South Africa) in Durban, where the group of five is expected to discuss the establishment of an international development bank.

"BRICS Development Bank will make the global financial sector more democratic," said Brazil's Minister for Development, Industry and Foreign Trade Fernando Pimentel, according to Xinhua.

China and has touted the proposed bank as an alternative to international financial institutions like the World Bank, which funds infrastructure and development projects in emerging economies around the world.

With a combined GDP of over $14 trillion, the BRICS is looking to expand its economic influence throughout African countries in particular.

"We are creating new axis of global development,” Anand Sharma, India's Minister of Commerce, Industry and Textiles, Xinhua reported. “The global economic order created several decades ago is now undergoing change and we believe for the better to make it more representative.”