A nemzeti fejlesztési miniszter 53/2014. (XII. 13.) NFM rendelete az egyes folyékony tüzelő- és fűtőanyagok kéntartalmáról
This ministerial decree establishes the legal limits and technical standards for the ash content allowed in various liquid fuels and heating oils used in Hungary. It ensures that fuels meet specific quality requirements to protect equipment and the environment. The regulation primarily affects fuel producers, importers, and distributors operating within Hungary, as well as industrial and residential heating system users.