Research Article

Digital Transformation and ESG Performance: A Quasinatural Experiment Based on China’s Environmental Protection Law

Table 2

Subcategories of PEs.

CodeIndustryNumber of firmsPercent (%)

1B08, B09Mining2644.31%
2C17Textiles3896.34%
3C19Leather, fur, feathers, and their products761.24%
4C22Papermaking and paper products2534.13%
5C25, B07Oil and gas processing, coking, and nuclear fuel processing2073.38%
6C26Chemical materials and products186230.37%
7C28Chemical fibers2353.83%
8C29Rubber and plastic products5458.89%
9C30Nonmetallic mineral products75012.23%
10C31Metallurgy of black metals3054.97%
11C32Metallurgy of nonferrous metals5729.33%
12D44Electric power and hot power production67310.98%
Total6131100%