| 1872 | Building permit for the construction of a foundry to factory owner L. Meyer. |
| 1873 | Founded as Eisenwerke L. Meyer jun. & Co. Artistic casting for the home |
| 1936 | Mitteldeutsche Leichtmetallwerke GmbH Sand, chill and die casting for the German aviation industry |
| 1946 | Expropriation of the company and Re-foundation of Metallwerke GmbH Harzgerode, Piston production and light metal mould castings |
| 1960 | VEB Druckguss- und Kolbenwerke Harzgerode, Largest manufacturer of large diesel and vehicle pistons in East Germany |
| 1990 | Renamed back to Metallwerke GmbH Harzgerode |
| 1993 | Privatisation under Metallwerke GmbH Harzgerode |
| 2001 | Acquisition by TRIMET AG Düsseldorf, merger with Aluminium Essen GmbH, |
| 2002 | Conversion of TRIMET ALUMINIUM GMBH into TRIMET ALUMINIUM AG |
| 2013 | Conversion of TRIMET into an SE (Societas Europaea) |
| 2018 | TRIMET is bringing its automotive division into a joint venture with the Chinese automotive specialist Bohai Automotive Systems Co., Ltd. The merger opens up additional prospects for BOHAI TRIMET Automotive as a system supplier to increasingly globally active car manufacturers and thus strengthens the two production sites in Harzgerode and Sömmerda in the long term. |
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