On May 29, the Ministry of Ecology and Environment issued the National Technical Guidance Catalogue for Pollution Prevention and Control in 2025.

Among them, the pre-charged coupling small-area quarantine rapping electrostatic precipitator technology at the entrance gradually expanding section and the one-box purification technology of cement kiln dust and nitrate are listed in the encouraged technology of the National Pollution Prevention and Control Technology Guidance Catalogue in 2025.

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