
Agricultural machinery dealer with over 100 years of tradition: sales, service and spare parts for John Deere and other brands.
Carl Postertz GmbH & Co. KG
Grefrath · Heinsberg · Wülfrath · WolmirstedtNew on Amplifa
About us
Carl Postertz GmbH & Co. KG is an agricultural machinery company founded in 1916 with its headquarters in Grefrath on the Lower Rhine. As an official John Deere dealer, the company sells tractors and agricultural machinery, as well as used machines, spare parts and services. In its early years, in addition to trading, the company also manufactured its own products such as cultivators and trailers; today the focus is on sales, maintenance and vehicle handover. Through its sister company Pfeifer GmbH in Wolmirstedt, the company operates as a Westfalia Separator specialized centre for milking and cooling technology. Further locations exist in Heinsberg and in Wülfrath (C.Postertz GmbH), where the former sales territory of the company Claus & Mathes was taken over in 2017. Customers come mainly from agriculture; deliveries are made within Germany.
- Site
- Grefrath
- Processes
- New machine sales, Used machine sales, Spare parts (John Deere parts), Service, Vehicle handover, Milking and cooling technology sales (Pfeifer GmbH)
- Founded
- 1916
- Industries
- Agriculture, Agricultural machinery trade
- 01
New machine sales
- 02
Used machine sales
- 03
Spare parts (John Deere parts)
- 04
Service
- 05
Vehicle handover
- 06
Milking and cooling technology sales (Pfeifer GmbH)
Locations

Grefrath
DEMain location: new and used machinery sales, service, spare parts
- Used and new machinery hall 1,600 sqm (1997)
- Main building with 400 sqm extension (offices, new machinery exhibition, vehicle handovers, 2000–2001)
Heinsberg
DESales point for the John Deere sales territory of the district of Heinsberg (since 2006)
Wülfrath
DESales point of C.Postertz GmbH (former sales territory of Claus & Mathes, since 2017)
Wolmirstedt
DEPfeifer GmbH – Westfalia Separator specialized centre for milking and cooling technology
Machines Offered






Inside the production




Industries
Additional services
Reference customers
History
- 1916
Founding of the company Carl Postertz; business premises initially on Mühlhauser Strasse, later at Hohe Strasse 42; own production of cultivators and trailers; sales of Deutz (KHD) tractors and Fahr agricultural machinery
After Carl Postertz's death, the company was led by his daughter Hildegard Schmitz and her husband Ferdinand Schmitz
- 1968
Death of Ferdinand Schmitz; leadership by Hildegard Schmitz and son Karl-Heinz Schmitz
- 1983
The John Deere brand is added to the product range
- 1987
Move to the new location at Am Weidenbusch 1 in Grefrath
- 1991
Founding of Pfeifer GmbH in Wolmirstedt (Fabrikstrasse 2) as a Westfalia Separator specialized centre for milking and cooling technology
- 1992
Exclusive sales of the John Deere brand in the agricultural machinery sector in Grefrath
- 1996
New building for Pfeifer GmbH at Handwerkring 12 in Wolmirstedt
- 1997
New construction of a used and new machinery hall with 1,600 sqm in Grefrath
- 2000
Extension of the main building by 400 sqm (office space, new machinery exhibition, vehicle handovers, until 2001)
- 2006
Expansion of the John Deere sales territory to the district of Heinsberg; new location at Ferdinand Porsche Strasse 5, Heinsberg
- 2017
February 1, 2017: Start of operations of C.Postertz GmbH in Wülfrath; takeover of the former sales territory of Claus & Mathes