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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
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Projects of NA 001-01-03 GA

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Document number	Begin	Title	Comment
DIN EN IEC 61094-9	2025-11-11	Electroacoustics - Measurement microphones - Part 9: Specifications for transfer standard microphones More	Comment
DIN 45657	2024-08-01	Sound level meters - Additional requirements for special measuring tasks More	Comment
DIN EN IEC 61252	2022-08-29	Electroacoustics - Personal sound exposure meters (IEC 61252:2025); German and English version EN IEC 61252:2025 More	Comment

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Projects of NA 001-01-03 GA

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