Can national environmental protection supervision and control have a lasting impact on corporate production efficiency? - an empirical study based on the multi-phase difference-in-difference model.

Environ Sci Pollut Res Int · 2022 · PMC8947813 · PMID 35332454

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an increasing trendno p-value reported

After policy implementation, the marginal effect line tilts rapidly to the upper right; the effect shows an increasing trend and also becomes increasingly stronger.

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