| 1971 | The previously independent MAHLE companies are grouped together to form MAHLE GmbH
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| 1972 | Acquisition of shares in Knecht Filterwerke GmbH, Germany, and consequently also in Knecht Filterwerk Ges.m.b.H., Austria
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| 1973 | Acquisition of a holding in FISA Fundiciones Industriales S.A. in Spain—now MAHLE S.A.
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| 1974 | Introduction of star-pleated filter elements in dedusting technology
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| 1976 | Aluminum engine blocks made using low-pressure die casting process reach the series production stage
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| First pistons made of ductile iron (GGG) for truck diesel engines
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| 1978 | Establishment of MAHLE Manufacturing—now MAHLE, Inc., USA
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| Development of profiled piston pins
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| 1979 | Acquisition of CIMA, later MAHLE Indústria é Comércio Ltda., Brazil
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| 1980 | Cold extrusion of piston pin blanks
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| 1981 | Establishment of Metalúrgica Mogi Guaçu Ltda., Brazil—now part of MAHLE Metal Leve, S.A.
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| 1983 | Pleuco GmbH—now MAHLE Ventiltrieb GmbH, Germany—acquires Sinterwerke Grenchen AG, Switzerland—now MAHLE Motorkomponenten Schweiz AG. Pleuco GmbH only manufacturer of cast and sintered valve seat inserts and guides
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| First use of freely programmable CNC profiling lathes in piston machining
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| 1984 | First standard use of laser welding in the automotive industry (on valve tappets)
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| 1985 | HYDROTHERMIC® and HYDROTHERMATIK® pistons in series production
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| Introduction of ecological filter elements
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| Production of composite camshafts
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| 1986 | Acquisition of Técafiltres S.A. and Soparis S.A., France—now MAHLE Filter Systems France SAS
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| 1987 | Acquisition of Mondial Piston S.p.A., Italy—now MAHLE Componenti Motori Italia S.p.A.
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| Introduction of FERROTHERM® pistons
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| 1988 | Composite pistons for large diesel engines with bore cooling
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| 1989 | Ceramic fiber-reinforced LIQUOSTATIK® aluminum pistons for high-load diesel engines go into series production |