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Fire detection and fire alarm systems - Part 33: Components of voice alarm systems - Active loudspeakers

Industrial systems, installations and equipment and industrial products - Structuring principles and reference designation - - Part 20: Aircraft systems

Natural pozzolana and natural activated pozzolana - Definitions, specifications and conformity criteria

Testing fresh concrete - Part 14: Invert cone flow time

Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors - Determination of the sound power level - Part 3: hybrid units

Welding consumables - Testing of welding consumables by means of weld metal specimens - Part 4: Test piece for determining the hardness of surfacing

Generic specification: Printed boards

Masonry products - Environmental product declarations for masonry units - Product category rules complementary to EN 15804 +A2: 2019

EN 15882-6 ‘Extended application of results from fire resistance tests for service installations - Part 6: Smoke Control Dampers'

prEN 1366-14 ‘Fire resistance tests for service installations - Part 14: Partial penetration seals'

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