• 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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  • Smart Farming Standards and specifications are drivers for the digitalization of agriculture

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DIN 21539 [Withdrawn] referenced in following documents:

Document number Edition Title
DIN 21531-1 1990-07 Arch supports; arches B 5,4 to B 20,2 More 
DIN 21531-2 1990-07 Arch supports; arches B 21,7 to B 63 More