DIN EN 13423:2019 Natural gas vehicles - Requirements for NGV Workshops and the management of compressed natural gas (CNG) vehicles; German and English version prEN 13423:2019
2021DIN EN 13423:2021-09 Natural gas vehicles - Requirements for NGV workshops and the management of compressed natural gas (CNG) vehicles; German version EN 13423:2021 / Note: This standard is part of the DVGW body of rules.
2019DIN EN 13423:2019 Natural gas vehicles - Requirements for NGV Workshops and the management of compressed natural gas (CNG) vehicles; German and English version prEN 13423:2019
2001DIN EN 13423:2001 Compressed natural gas vehicle operations; German version EN 13423:2000