The manufacture of goods for export contributes a lot to China's severe air pollution, a recent study shows.

The major air pollutants are ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide and greenhouse gases.

Research conducted by nine Chinese and international scholars showed that in 2006, about 36 percent of sulfur dioxide, 27 percent of nitrogen oxide and 22 percent of carbon monoxide emitted by China came from export manufacturers.

"Consumption, production and pollution are related. We cannot only blame producers for pollution, but also consumers," Lin Jintai, lead author of the study paper and a professor at Peking University, told China Daily on Wednesday.

"Because of this, China and other countries should strengthen cooperation in fighting against pollution, which is a global issue," Lin said.

The pollution from Chinese export manufacturers also blew across the Pacific Ocean, contributing 3 to 10 percent sulphate concentrations to the western US in 2006, the research said.

The paper was published in the Proceedings of the National Academy of Sciences on Monday, and was the work of nine scientists from three countries.