AMPO AMPO is a manufacturer and distributor of stainless steel, high alloy castings, and engineered valves. | ![]() Heinz Krumme Heinz Krumme is a metal processing company that manufactures injection molds and components for machinery and plant engineering. | ![]() Doerrenberg Edelstahl Doerrenberg Edelstahl is a company that produces and supplies tool steel to the automotive, forging, and extrusion industries. | |
Founding Date | Founding Date 1964 | Founding Date 1949 | Founding Date 1860 |
Type | Type Private | Type Private | Type Subsidiary |
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Locations | Locations Idiazabal, ES HQ | Locations Berlin, DE HQ | Locations Engelskirchen, DE HQ Jiashan, CN Engelskirchen, DE Gummersbach, DE Gummersbach, DE Herford, DE Wiehl, DE see more |
Employees | Employees 575 | Employees 100 | Employees 600 |

Heinz Krumme is a metal processing company that manufactures injection molds and components for machinery and plant engineering.
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Doerrenberg Edelstahl is a company that produces and supplies tool steel to the automotive, forging, and extrusion industries.
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