Development, manufacturing and distribution of NOx sensors, urea pumps and urea dosing modules for exhaust gas aftertreatment
AMPRO Technologie GmbH
TroisdorfNew on Amplifa
About AMPRO
AMPRO Technologie GmbH is a family-run company based in Troisdorf near Cologne that develops, manufactures and distributes NOx sensors, urea pumps and urea dosing modules for the exhaust gas aftertreatment of diesel vehicles. Founded in 2007, the company supplies OEMs and the independent aftermarket with 1:1 replacement parts for passenger cars, light commercial vehicles, trucks and buses. The sensors are manufactured with a high level of in-house production depth – from the basic chemicals to the finished product – and the hardware and software are developed in-house. Every NOx sensor is tested over five days and individually calibrated. The product range comprises more than 300 NOx sensor models for European and US vehicle brands, complemented by additive tanks. With a production capacity of over 1,200,000 units per year, a permanent stock of 20,000 units in Troisdorf and TecDoc premium product data, AMPRO supplies customers in Germany and international markets, supported by distribution partners such as Martex Sp. z o.o. in Poland.
- Site
- Troisdorf
- Processes
- NOx sensor manufacturing (sensor production, individually calibrated), Urea pump manufacturing (AdBlue pumps), Urea dosing module manufacturing, Additive tank manufacturing, Sensor testing and calibration (each sensor tested over 5 days), R&D and in-house development (hardware and software), Marketing support for sales partners, Sales and technical support
- Materials
- Ceramics, Electronics
- Certificates
- Individual calibration per sensor, 5-day test per sensor
- Founded
- 2007
- Industries
- Automotive (Independent Aftermarket), Commercial vehicles (trucks, buses), Passenger cars and light commercial vehicles, OEM, Automotive (Automotive spare parts / Independent Aftermarket), OEM and aftermarket
- 01
In-house R&D (hardware and software)
- 02
Manufacturing with high production depth (basic chemicals to end product)
- 03
Sensor testing and individual calibration (5 days per sensor)
- 04
Warehousing in Troisdorf (20,000 units in stock)
- 05
Distribution to OEMs and aftermarket via distributors and sales partners
Production Depth and Technology
Ceramics
Sensor element of the NOx sensors for measuring nitrogen oxides and oxygen in the exhaust gas
Electronics
In-house developed hardware and software components for sensor control and connection to the engine control unit
Location
Troisdorf
DESite, warehouse and sales
- Lot size
- Permanent stock 20,000 units
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| NOx sensor manufacturing (sensor production, individually calibrated)Assembly | – | – | – | 1,200,000 units per year | Ceramics, Electronics |
| Urea pump manufacturing (AdBlue pumps)Assembly | – | – | – | – | – |
| Urea dosing module manufacturingAssembly | – | – | – | – | – |
| Additive tank manufacturingAssembly | – | – | – | – | – |
| Sensor testing and calibration (each sensor tested over 5 days)Testing | – | – | – | – | – |
Additional services
Reference customers
Quality
Every NOx sensor is tested over five days and individually calibrated; the products are 1:1 replacements for original parts at OE quality level and are produced 100 % new.
| Evidence | Troisdorf |
|---|---|
| Individual calibration per sensor | |
| 5-day test per sensor |
Our History
- 2007
Foundation of AMPRO by Dr. Wolfgang Twardziok
- 2023
18 new NOx sensor references in the product catalog, including for VW, Renault, Nissan and FUSO
- 2025
New NOx sensor references for FIAT, DAF and VW as well as new additive tank references for PSA
- 2026
Trade fair appearance at Automechanika Frankfurt (Hall 4.0, Booth C61), 8–12 September