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

Table 1

Subcategories of EEs and REs.

	Code	Industry	Number of samples	Percent (%)
1	B06, B08, B09, B10, B11	Mining	639	8.28%
2	C15	Beverage, liquor, and refined tea manufacturing	375	4.86%
3	C19	Fur, feathers, leather, and their products	76	0.98%
4	C20, C21	Wood processing	189	2.45%
5	C22	Papermaking and paper products	253	3.28%
6	C23	Printing and recording media copying	91	1.18%
7	C25, B07	Coking, oil and gas processing, nuclear fuel processing	207	2.68%
8	C26	Chemical materials and products	1862	24.12%
9	C28	Chemical fibers	235	3.04%
10	C31	Metallurgy of black metals	305	3.95%
11	C32	Metallurgy of nonferrous metals	572	7.41%
12	C33	Metallic mineral products	463	6.00%
13	C35	Special equipment manufacturing sector	1513	19.60%
14	D44	Electric power and hot power production	673	8.72%
15	D45	Gas production and supply industry	132	1.71%
16	D46	Waste resource and material recycling and processing	134	1.74%
Total			7719	100%