German plastics and chemicals giant Covestro AG is upbeat about the future of China's manufacturing sector despite the country's economic slowdown, the company's chief executive officer said.

Covestro went through a comparatively harder time in China in the second and third quarters of last year due to a slump in the financial markets and the problem of destocking.

However, the momentum quickly picked up in the fourth quarter and has been even more noticeable since the Spring Festival in February this year, said CEO Patrick Thomas.