चीन विषाक्त और खतरनाक वायु प्रदूषकों की सूची

six volatile organic compounds, including dichloromethane, formaldehyde,chloroform,trichloroethylene, tetrachloroethylene, and acetaldehyde,five heavy metals substances including cadmium and cadmium compounds,chromium and its compounds,mercury and mercury compounds, lead and lead compounds, and arsenic and arsenic compounds.