In 2023, excavators emitted around ** percent of nitrogen oxides among all engineering machinery vehicles in China. Vehicles were one of the main sources of air pollution in China.
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Ministry of Ecology and Environment (China). (March 26, 2025). Nitrogen oxides emissions share from engineering machinery in China as of 2023, by type [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/
Ministry of Ecology and Environment (China). "Nitrogen oxides emissions share from engineering machinery in China as of 2023, by type." Chart. March 26, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/
Ministry of Ecology and Environment (China). (2025). Nitrogen oxides emissions share from engineering machinery in China as of 2023, by type. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/
Ministry of Ecology and Environment (China). "Nitrogen Oxides Emissions Share from Engineering Machinery in China as of 2023, by Type." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 26 Mar 2025, /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/
Ministry of Ecology and Environment (China), Nitrogen oxides emissions share from engineering machinery in China as of 2023, by type ÌÇÐÄÆƽâ°æ, /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/ (last visited July 27, 2026)
Nitrogen oxides emissions share from engineering machinery in China as of 2023, by type [Graph], Ministry of Ecology and Environment (China), March 26, 2025. [Online]. Available: /statistics/1068854/china-share-nitrogen-oxides-emission-by-type-of-engineering-machinery/
