“…Otherwise, it takes on a value of 0. The compilation of heavy-polluting firms is founded on the revised Guidelines on Industry Classification of Listed Firms by the China Securities Regulatory Commission in 2012, along with the List of Listed Firms for Environmental Verification Industry Classification in 2008 [35,58,59]. This encompasses sectors such as thermal power, steel, cement, electrolytic aluminum, coal, metallurgy, building materials, mining, chemicals, petrochemicals, pharmaceuticals, light, textiles, and leather (codes: B06, B07, B08, B09, B11, C17, C18, C19, C22, C25, C26, C27, C28, C29, C30, C31, C32, C33, D44.).…”