Viet Nam is facing serious air pollution in large cities, diesel engine emissions are the main source of emissions. In this context, DEF (Diesel Exhaust Fluid) solution is considered an important step forward in reducing NOx (nitrogen oxide), the leading harmful agent in diesel emissions.

A conference on science and technology for the preservation and processing of agro-forestry-fisheries and national agricultural mechanisation in 2025 was co-organised by the Institute of Agricultural Engineering and Post-Harvest Technology, the Association of Food Science and Technology and the Association of Agricultural Engineering, in Ha Noi, on September 12.