| Client name | City | Country |
|---|---|---|
| KG transmitter components GmbH | Bad Oeynhausen | Germany |
| KH Engineering België N.V. | Antwerpen | Belgium |
| KI plan GmbH | Pinneberg | Germany |
| Kia Man Danesh | Tehran | |
| Kiel Engineering GmbH | Gelsenkirchen | Germany |
| Kiel Enginieering GmbH | Wesseling | Germany |
| KINGSWAY FLOW CONTROL TECHNOLOGY (BEIJING) CO.,LTD | BEIJING | China |
| Klaus Fischer GmbH & Co. KG | Bad Salzuflen | Germany |
| KLAUS UNION GmbH & Co. KG | Bochum | Germany |
| KLAUS-J. THUM VDI | Parey-Elbe | Germany |
| Klinger Denmark a/s | Brøndby | Denmark |
| KLINGER Fluid Control GmbH | Gumpoldskirchen | Austria |
| Klinger Gysi AG | Suhr | Switzerland |
| KLINGER SPAIN, S.A.U. | Madrid | Spain |
| KLINGER-DIE ERSTE CO., LTD. | Beitun Dist., Taichung City | Taiwan, Province of China |
| KLK EMMERICH GmbH | Emmerich | Germany |
| Koch Fertilizer Canada, ULC | Brandon | Canada |
| Koller + Luding | Amberg | Germany |
| Kommanditgesellschaft Deutsche Gasrußwerke GmbH & Co | Dortmund | Germany |
| KOMOTO Inc. | Gimpo-Si | Republic of Korea |
| König GmbH | Starnberg | Germany |
| Koninklijk Belgisch Instituut voor Natuurwetenschappen | Brussels | Belgium |
| Kontram Oy | Vantaa | Finland |
| KORAMIS GmbH | St. Ingbert | Germany |
| Korea Unicom Valve Co., Ltd. | ChungcheongNamdo | Republic of Korea |