Output in world's second-biggest economy is facing downside risks

China's economic downside risks have been aggravated by slowing expansion in the manufacturing sector and weak market demand, which is reinforcing expectations of more decisive easing actions from the government.

In May, expansion of the manufacturing sector cooled to its slowest in five months, with a lower-than-expected Purchasing Managers' Index (PMI) dropping to 50.4 from April's 53.3, according to data released by the National Bureau of Statistics and the China Federation of Logistics and Purchasing on Friday.

The PMI in June is likely to fall to less than 50, suggesting contraction in the manufacturing sector.

The latest news from the United States and the eurozone points to increasingly difficult expectations for exports, said Yao Wei, China economist with Societe Generale SA.

"The ongoing easing measures are not strong enough to curb the slowdown in economic growth, and the central bank may consider reducing loan interest rates in the near term," Yao said.

"The sharp drop in May was in line with the overall slowing economic expansion," said Zhang Liqun, a senior economist at the Development Research Center of the State Council.

However, a statement on the China Federation of Logistics and Purchasing website denied that the world's second largest economy is entering a new "decline stage", as the PMI data is still above 50.

Enterprises have felt the pinch of cooling economic growth. Since April, Shanghai-based Guangyu Automobile Air Conditioning Compressor Co has seen a drop in both raw material input and production capacity of about 30 percent compared with March.

The whole industrial chain is facing choppy conditions, said Dong Yaojun, board secretariat of the company.

The company's upstream suppliers, such as aluminum producers, even offered a five-percent discount to stimulate sales in the past two months, he said.

"So far, there's no immediate boost in massive infrastructure construction, which reduced the market need of our buyers, such as truck makers. So we are indirectly affected," said Dong.

Zhang predicted that the production of manufacturing companies may contract in the short term as the new order index — which measures orders for the manufacturing sector, including domestic and export demand — is decreasing quickly, hitting 49.8 in May, compared with 54.5 in April.

In the meantime, the output sub-index — a measure of the total production of companies in the manufacturing sector — declined by 4.3 points to 52.9, while the new export indicator decreased to 50.4 from 52.2, according to the official statement.

HSBC Holdings released its own manufacturing PMI on Friday. The reading of 48.4 in May, down slightly from 49.3 in April, signaled a seventh successive month of worsening conditions in the sector.