When the standard is harmonized under a directive or regulation, the word Harmonized appear. When such an inscription does not appear, it means that the standard is related to / supporting the relevant directive or regulation.
Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)Harmonized
БДС EN ISO 28927-4:2011
БДС EN ISO 28927-4:2010/A1:2019
60.60 Standard published
Feb 14, 2019