According to EU Directive 2011/62/EU, as of 2nd July 2013, all the active substances imported in the European Union must have been manufactured in compliance with standards of good manufacturing practices (GMP), this compliance must be confirmed in writing by the competent authority of the exporting country.
The AEM (European Drug Agency) has created a database (EudraGMP) available to the general public where all the GMPs are compiled. You can freely consult the GMP for the sites conforming MOEHS Group in the following link:
http://eudragmp.ema.europa.eu/inspections/displayWelcome.do;jsessionid=JdnQR6wYXGvN9xfLFGK3bCwJv8n4ZvZPRh3jrgY0pzZxpkhjfJlR!716544101