Judgment of the Court (Fifth Chamber) of 22 January 2026.#European Commission v Hungary.#Failure of a Member State to fulfil obligations – Freedom of establishment – National legislation establishing reference prices for certain basic construction materials below market prices – Obligation to pay an ‘additional mining fee’ corresponding to 90% of the difference between the reference price and the selling price – Measure mainly affecting undertakings held by companies established in other Member States – No justification – Procedure for the provision of information in the field of technical standards and regulations and of rules on Information Society services – Directive (EU) 2015/1535 – Article 1(1)(d) – Concept of ‘other requirements’.#Case C-144/24.