In the benchmark regression analysis, the outcome variables divided into two types: column (1)–(3) of Table 4 represent pollution emission of SO2, dust and industrial waste water, and column (4)–(6) indicate environment technology efficiency (ETE) of the three pollutants, column (7) reveals the average result of ETE combines three pollutants together. The indicator variable l(piti) represents the PTIT information disclosure impact on environment pollution and environment technology efficiency