Industry solutions:

As a supplier to the automotive industry, we manufacture high-quality interior and exterior design elements.

Our service portfolio for the automotive industry, for public transport and for caravanning includes the development and series production of fans as well as design-oriented components for vehicle interiors and exteriors, for example door sill trims and console controls.
As a 1-tier and 2-tier supplier, we are able to exploit our expertise in industrial metal processing, surface finishing and back-injection moulding of metal and metal foil.


We manufacture aluminium decorative elements with high demands on design, functionality and haptics – without component distortion or gaps, including:

  • Boot and door sill trims
  • Interior visible parts, e.g. side applications, decorative trims and centre console applications
  • Exterior visible parts, e.g. trim strips and door handles
  • Push-buttons, e.g. for door openers in public traffic
Technology details

Design components, design parts for the automotive sector, e.g. anodized trims and decors
Complex (design) moulded parts made of metal with various surface finishes
Complex (design) moulded parts made of metal with various surface finishes

Hybrid technology.

Back-injection moulding enables the functional expansion of components, especially through the integration of sensors or light elements.
In this process, we combine metals or metal foils with specific plastics, without gaps or distortion. Furthermore, we are able to anodise back-moulded components in our in-house anodising plant.

  • Door sill trims
  • Push buttons
Technology details

Supplier, manufacturer of premium door sill trims or trim for automotive sector.
Back injection of metal and metal foil with integrative possibilities
Back injection of metal and metal foil with integrative possibilities

Elements for ventilation.

According to customer specifications, we develop and manufacture complete blower systems or individual components, including plastic fan wheels, housings and ducting, and are also familiar with the procurement of motors and electronics. In the field of blower optimisation, we evaluate and implement solutions for optimised flow, power and noise efficiency.

  • Blower systems or units for seats
  • Ventilation elements for campers
Technology details

Development and injection moulding of specific plastic fan wheels
Development and injection moulding of specific plastic fan wheels
Product portfolio

for the interieur.


Breadth and depth
in manufacturing

Our range of technology and our highly qualified team form the basis of our manufacturing competence.

Our technology

Research & DevelopmentConstruction & prototypingTool design and constructionMetal processingSurface finishing
Plastics injection mouldingBonding technologyBack injection & hybridAssembly & automationProduct & packaging design

Door sills.

Video showing the creation of a door sill trim



Every year since 2020, we have supported the TUFast e.V. racing team at the Technical University of Munich with various vehicle components.

Your contact
for automotive.

Key Account Management

Evamaria Angerer


+49 8071 9150


Division Ventilation & Surfaces

Am Burgfrieden 2
D-83512 Wasserburg


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    Gronbach worldwide

    Gronbach Group: Device construction, assembly production, component production and fan development


    Brand Gronbach: Specialist in metal processing and appliances
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      • Order volumes
      • [
      • Requests from private individuals
      Order volumes

      Please take into account that our production is geared towards medium to large series production. We are therefore unable to process requests for very small quantities for economic reasons.

      Requests from private individuals

      We ask for your understanding that we cannot consider requests from private individuals of any kind.