As a fundamental logistics service, the express delivery (ED) industry provides production and consumption activities to maintain efficient supply chain operations. It plays an important role in promoting industrial development and maintaining daily life and consumption. This study examined the...

Sulfur dioxide (SO2) is a typical pollutant that affects human health, climate, and environmental and ecological conditions. China has been experiencing high concentrations of SO2, particularly in urban areas, since the 1990s. In 2010, a "joint prevention and control" (JPC) policy was issued to...