Everything can always be better: because we are constantly improving the quality of our processes, maintain high standards for safe plant operation and environmental protection - and, strictly speaking, never stand still - our integrated management system is certified by the TÜV NORD CERT GmbH. We are currently certified with DIN EN ISO 9001, DIN EN ISO 14001 and DIN ISO 45001 in quality, environmental and safety management at VNG Gasspeicher GmbH.