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Normas CEN

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EN

EN 16931-1:2026

En Vigor
2026-03-18
Electronic invoicing - Part 1: Semantic data model of the core elements of an electronic invoice
EN

EN 4709-003:2026

En Vigor
2026-03-18
Aerospace series - Unmanned Aircraft Systems - Part 003: Geo-awareness requirements
EN

EN ISO 18739:2026

En Vigor
2026-03-18
Dentistry - Vocabulary of process chain for CAD/CAM systems (ISO 18739:2026)
EN

EN 1991-4:2026

En Vigor
2026-03-18
Eurocode 1 - Actions on structures - Part 4: Silos and tanks