From engineering to manufacturing of technical parts in polymer, composite and metal

From  research to manufacturing 





SUB-ALLIANCE combines the expertise of 4 ma manufacturing divisions, each specialising in the development, prototyping, production and assembly of plastic, composite, polymer and metal parts.

By having all the expertise in-house, you can benefit from support from engineering to manufacturing for all your industrial projects. 
And this with a single point of contact and the highest quality standards!

The members of SUB-ALLIANCE pay particular attention to supporting constant investments in the latest generation of machinery to offer you the best prices with the shortest lead times.


Discover our expertise




All for leading-edge-sectors

With SUB-ALLIANCE, you benefit from more than 50 years of know-how in the service of various demanding sectors of activity:

  • Aerospace
  • Banking
  • Defense
  • Electricity
  • Filtration
  • Civil engineering
  • Industry
  • Medical
  • Transportation


Global presence

Our 7 units are located in 3 countries: 

  • Belgium
  • France
  • India

And 60% of our turnover is achieved through export: Europe, United States, Japan, Brazil, Australia, China, Canada, India, England


Family business 

The story began in 1950 with Mr Liévin DEDECKER and the creation of FERONYL. 
Today it is the 3rd generation DEDECKER at the head of all the member companies of the alliance. 
All together they perpetuate the values which are dear to them: high quality, innovation, flexibility, proximity, confidentiality and efficiency.

"Innovating means building together in the mutual respect and trust of our customers and our teams".



Discover our story


4 divisions, 4 expertise
dedicated to the success of your industrial projects



Specialised in the manufacture of tools for the plastics industry and in the machining of technical parts in plastic, polymer, metal, copper, brass, aluminium and titanium 





Specialised in injection moulding and in the manufacture of components and sub-assemblies in polymers, composites and multi-materials.


Discover FERONYL





Specialised in bar turning and super finishing of mechanical parts: automatic turning of metals and plastics, millig, grinding, honing and heat treatment.


Discover DPM


Specialised in the engineering and manufacture of gears, transmission parts and gearboxes in both small and medium series



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