about Altek

The altek GmbH is a component supplier for numerous well known Sprayer Manufacturers.

Many years of experience and specialization in this ecologically and economically important niche, has brought altek to the level of technological world leaders. Since the acquisition of altek by Erhard Wissler in 1999 it is managed as a family Company and its Headquarters can be found in Rottenburg-Hailfingen. The product development and production is exclusively handled in Germany, with distribution and logistics including branches in England and Brazil counting with around 60 Employees.

Our customers benefit from:

  • Years of Expertise and high technological Know-how
  • Higher Quality Standards and Product Reliability
  • Short delivery periods and fast service
  • Customized Optimization and flexible solutions
  • First class consultation

Then and now

1965: Founding of Company

The starting roots of altek are founded upon the innovative spirit of two engineers and two operators from the company Rau, who didn´t want to resort on the competitor´s pumps for their field sprayers. So in 1965, in the garage of one of the company founders, the development and manufacturing of the first altek pumps took place.

1970: Construction of the first Operations Building

The quantities produced started growing in demand so they founded in 1970 the first altek operating building. A few years later the uprising market share the products had reached required the company to expand.

1979: Construction of the Official Headquarters

Due to the uprising market share the products had reached, the company required to expand. In 1979 the new altek GmbH building emerged and has set root as the Company´s Headquarters to this day.

1992: Rau Group goes into Bankruptcy

During the 80s the market suffered a negative impact causing the majority of farmers to fall victims to the structural change. The Agricultural machinery manufacturers sold fewer machines impacting the sales of the Rau Group who in 1992 went financially bankrupt. Their subsidiary, altek, narrowly avoided bankruptcy itself.

1995: Erhard Wissler joins the Rau Group

Erhard Wissler joined as the Rau Group Managing director, where altek also fell into his area of responsibility.

1999: Acquisition of altek GmbH by Erhard Wissler

Three years later, the Rau Group was acquired by Kverneland Group, whose owner decided to separate his purchase from the altek GmbH. Erhard Wissler jumped at the chance to independency acquiring altek on 1.10.1999 leading the Company up to this day as an Independent family owned business with its Headquarters in Rottenburg-Hailfingen, Germany.

2001: Introduction to Carbon Technology (Or: Entry into Carbon Technology Market)

In addition to agricultural technology, Carbon-fiber technology has always been a great passion of Erhard Wissler. Consequently, altek didn’t remain as the only company in his portfolio for long, in 2001 the founding of CarboFibretec took place, investing in the development of future technology.

2008: Thomas Schwert becomes Manager Director of altek GmbH

With the recruiting of Tomas Schwert as Manager Director of altek in 2008, Erhard Wissler has gained the valuable support of an experienced connoisseur of the agricultural machinery industry. Since then, altek GmbH has continued building success and Erhard Wissler is now focusing more on the development of the Wissler Group.

2015: 50th Anniversary



alWE-plast is a subsidiary of altek GmbH. alWE-plast was established in 2001 and is held in partnership with a leading moulds manufactures. All altek plastic parts are produced by alWE-plast.

The products of alWE-plast fulfil also the highest quality standards like altek does. A team of highly skilled spray casting specialists are the guarantee for permanent best results. All customers are always treated with the same respect, the same highest engagement and all the available know-how is part in the job to achieve the maximum possible result. This is the guarantee that each order of parts are produced with most possible technological vision.

Should you have interest, please contact alWE-plast directly


As the name says: working, manufacturing and designing with Carbon fibres is the speciality of the CarboFibretec.

Heaving been a sister company of an aeroplane manufacturing company CarboFibretec is specialised in the production and development of high-tech components for the aerospace and aeroplane industry. Consumer products for example castings of highest quality for suitcases can be simply realized with the CarboFibretec team.

Together with the sister company CarbonSports high-tech bicycle frames and wheels made from carbon fibres are successful sold to the professional bicycle market. CarbonSports is setting the trends for the professional cyclist.

altek International Limited

altek International Limited is the UK division of altek GmbH. Since October 2008.


altek International Limited is located on the outskirts of the market town of Brigg – North Lincolnshire – England.


Responsible for the sales and support of altek products in the United Kingdom, Republic of Ireland and North America. Working with sprayer manufactures and distributors. In addition altek International Limited are the official distributors for LECHLER agricultural nozzles and accessories in the United Kingdom and Republic of Ireland.


Managing Director: Richard Riley
Office Number: +44 1652 688889

altek Importadora, Exportadora, Industria e Comercio de Equipamentos Agrícolas Ltda

altek Importadora, Exportadora, Industria e Comercio de Equipamentos Agrícolas Ltda is the division of altek GmbH in South America.


altek Importadora, Exportadora, Industria e Comercio de Equipamentos Agrícolas Ltda is located in Ernestina, Rio Grande do Sul, Brasil.


Responsible for the sales and support of altek products in South America. Working with sprayer manufactures and distributors.


Managing Director: Marco Oppelt
Office Number: 00 55 543378 1073

Quality Control

In altek GmbH, like in the whole Wissler Gruppe, assurance of high product quality is first priority.

A profound CAQ Software helps us with our daily job, to keep product quality on highest level. By the operater selftest we share responsability and thereby create a high level of quality awareness in our company.

Our quality department has the following tasks:

  • Supplier audits when selecting suppliers for suppliers' products
  • Testing devices management, control and calibrating
  • Management of warranties and actions taken
  • General first inspection of new parts, process- or drawing change
  • Goods income check according to testing plan specifications for every supplied batch of the more than 3000 goods in stock
  • Inspection during manufacturing in CNC production
  • 100% checking of the outgoing goods! Every product is checked regarding functionality and tightness!

Quality Management

Die Kundenzufriedenheit hat bei uns einen sehr hohen Stellenwert! Der Kunde mit seinen Vorstellungen und Ansprüchen an unsere Produkte und seinem Vertrauen in unsere Fähigkeiten ist der Mittelpunkt unserer Unternehmenstätigkeit. Unsere Kunden finden ihre Erwartungen an unsere Leistungen in unseren Produkten wieder. Kundenzufriedenheit resultiert aus Unternehmensqualität uns Unternehmensqualität ist das Ergebnis von Produkt- und Managementqualität der Organisation. Wir haben klar definierte und dokumentierte Unternehmensprozesse, die wir jederzeit im täglichen Geschäft einhalten und regelmäßig auf Verbesserung überprüfen. Unsere CAQ Software unterstützt uns bei der Qualitätssicherung, Qualitätsplanung und im Qualitätsmanagement.

Wir begeistern unsere Kunden durch:

  • partnerschaftlichen, herzlichen Umgang
  • hohe Kompetenz
  • Leistungserbringung zum größtmöglichen Kundennutzen
  • termingerechte Lieferungen erstklassiger Produkte

Unser Qualitätsmanagementsystem ist zertifiziert nach DIN EN ISO 9001:2015