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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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Standards [CURRENT]

ABNT NBR ISO 3864-4
Graphical symbols - Safety colours and safety signs Part 4: Colorimetric and photometric properties of safety sign materials

Edition 2019-02-28

Original language Portuguese

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

Climate change Standards and specifications support climate targets

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

ABNT NBR ISO 3864-4 Graphical symbols - Safety colours and safety signs Part 4: Colorimetric and photometric properties of safety sign materials

Want to learn more?

ABNT NBR ISO 3864-4
Graphical symbols - Safety colours and safety signs Part 4: Colorimetric and photometric properties of safety sign materials