Dear customers,
Due to the public holiday on May 14, 2026, and the following bridge day, we are currently not available in person.
Registrations and manually processed orders cannot be handled during this period. However, our webshop remains available for orders and downloads at any time.
From Monday onward, we will be happy to assist you again as usual.
You can also find many helpful answers and resources in our FAQ section at any time.
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This Supplement is intended to provide an understanding of standardization work and has been prepared for experts to facilitate committee work as a supplement to the principles of standardization (technical compendium for users of standards) and as an aid for the user of standards. In addition, approaches to active participation in standardization work are indicated. This Supplement has been prepared by Working Committee NA 173-00-01 AA "Normungsgrundsätze" ("Standardization principles") at DIN Standards Committee Principles of Standardization (NAGLN).