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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
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
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Standards [CURRENT]

ABNT NBR 11039
Leather - Calculation of the leather substance determination, tanning degree and combined organic substances - Procedure

Edition 2020-05-20

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 11039 Leather - Calculation of the leather substance determination, tanning degree and combined organic substances - Procedure

Want to learn more?

ABNT NBR 11039
Leather - Calculation of the leather substance determination, tanning degree and combined organic substances - Procedure