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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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DIN 21521 [Withdrawn] referenced in following documents:

Document number	Edition	Title
DGGT Tunnelbau	1995	Empfehlungen des Arbeitskreises "Tunnelbau" (ETB) More
DIN 21522	1972-07	Roof bolt plates for mining and tunnel support More

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

Climate change Standards and specifications support climate targets

DIN 21521 [Withdrawn] referenced in following documents:

Want to learn more?