Why is the air quality in Shenzhen good?

Structural adjustment and policy formulation.

1. Structural adjustment: Shenzhen adjusted its industrial structure, reduced traditional industries with high pollution and increased investment in environmental protection. This makes Shenzhen's industrial structure clean and environmentally friendly, and reduces the emission of air pollutants.

2. Policy formulation: Shenzhen has issued a series of environmental protection policies and regulations, which have strengthened the control and supervision of air pollution.