As the world’s manufacturing center move to China ,global consumers enjoy the low cost made in china product. Chinese people overcome the challenges of the economy,but serious air pollution has become a new challenge. Air Quality Index of (AQI) Shijiazhuang Hebei over 500 which is defined as Hazardous by US Environmental Protection Agency .
“It highlights that in developing countries there’s a trade-off in increasing incomes today and protecting public health and environmental quality,” said Greenstone. “And it highlights the fact that the public health costs are larger than we had thought.”