Keller Lufttechnik at a glance
| Divisions plant engineering | machine construction |
| Managing Directors | Horst Keller, Frank Keller |
| Turnover | approx. 65,5 million Euros (worldwide approx. 72 million Euros) in 2018 |
| Number of employees in Germany | 360 (as of 2021) |
| Subsidiaries | United States of America, China, Switzerland |
| Representative offices | worldwide in 17 countries |
| Trade register | Keller Lufttechnik GmbH + Co. KG excerpt 230710, local court of Stuttgart Industry number: 29230 VAT identification number: DE 145 913 063 D-U-N-S number: 31-614-5945 |
| Quallity certificates | ISO 9001:2015, approved welders in accordance with DIN EN ISO 9606-1 |
| Environmental certificates | ISO 14001:2015 and ISO 50001:2011 |
| Further Cartifications | Approved welder according to DVS directive 1171 Certified welding specialist operating with seal of approval (GSI SLV) in accordance with DIN EN 1090-2, EXC2 Specialised company according to § 19 I WHG |
| Association membership | VDI, VDMA, bdguss, Südwestmetall, LVI, IHK, BDS, BME, DIN, DVS. GARP, GTS, Hochschulbund Nürtingen, IND EX, KKE-BW, UKOM-BW |
| Founding year | 1903 by Albert Keller in Stuttgart-Uhlbach |