The production site in Bautzen has the certifications: 
DIN ISO 14001 (environmental management), 
DIN ISO 50001 (energy management), 
DIN ISO 45001 (occupational safety),
DIN ISO 9001 (quality management)
The production site in Lochem (Netherlands) has the certifications: 
DIN ISO 14001 (environmental management), 
DIN ISO 9001 (quality management),
DIN ISO 45001 (occupational safety)