A benchmark survey today has revealed that mounting concerns over the Eurozone sovereign debt crisis and a slowdown in China's growth has threatened the business outlooks for some of Asia's largest companies.

According to the Thomson Reuters/INSEAD Asia Business Sentiment Index, a reading above 50 indicates an overall positive outlook.

But, the latest set of results saw the index slide to 69 in June from 74 in March.

The survey comes at a time when the G20 are under pressure from emerging economies to present a concrete long-term strategy on how to tackle the Eurozone crisis.

Despite, Asia weathering the storm better than others, there is no doubt that fears over a lack of Eurozone sovereign debt crisis containment could change this situation.

While the formal communiqué from the G20 has not yet been released, The IMF's managing director Christine Lagarde said the emergency fund has been bolstered by China by a further $43bn dollars.

Before the summit started, Chinese Vice Finance Minister Zhu Guangyao said that the other "Bric" countries – including Brazil, Russia and India - would meet ahead of the meeting as they hope to leverage their contributions as they seek greater voting power in the western dominated fund.

Written and Presented by Lianna Brinded.