The researchers developed a detailed inventory of emissions of harmful chemicals in Jiangsu, China, from 2005 to 2014. They collected samples from various industries and found that the emissions increased over the years, especially from industrial processes and solvent use. Alkanes, aromatics, and oxygenated VOCs were the most common pollutants. The researchers also reduced uncertainties in their estimates compared to previous studies by looking at emissions from individual plants. The study highlights the importance of accurately estimating emissions to improve air quality and make better environmental policies.