Value added services

We make your life easier

Our engineering teams are not only leaders in the design and manufacture of custom parts, but also work tirelessly so you don’t have to worry about anything throughout the entire process.

Special packaging solutions

Special packaging solutions

With more than 1 billion parts manufactured per year and 3000 live references, being part of your project has been a constant objective in our evolution. We have developed several different packaging solutions for our customers' needs and we work closely with your product and production engineering teams to design the best solution for your requirements.
At RPK Group we have a dedicated packaging design department, which aims to offer the best possible solution to optimize your assembly lines. Your production process will be faster, more efficient and more competitive.

  • Bulk
  • Rods
  • Plastic trays with cavities
  • Plastic tubes rolled into cannisters
  • Adhesive sheets
  • Corrosion-proof plastic bags
  • Single item packing
  • Elastic tube packing
  • Tape and reel
  • Tube-packed compression springs
  • Shrink wrapping for rings
  • Packing in clean rooms


At RPK Group we have over 30 years of experience in providing assemblies and integration services for high-precision, demanding electromechanical systems, offering you innovative top-quality solutions adapted to your needs, using the latest technology.

We create components made to exact specifications, to ensure your product performs at its best. We are also capable of proposing, developing, sourcing and assembling your product components as machined parts, and bending dynamic parts, plastic sleeves or retainers.

Experts in:

  • Assembly in clean rooms classified according to ISO 7 (ISO 14644-1)
  • 100% unitary control.
  • Special processes such as 100% marking, hot pre-stressing, automatic component feed, laser welding and special automatic packaging.
  • Hardware insertions.
Over molding

Over molding

We can use overmolding techniques for wire forms, springs and bus bars. These complex components can be designed for a wide range of applications, from connectors for electronic devices in the automotive, e-mobility or other industrial fields to different applications in the medical sector. The process makes it possible to put together different components in the same assembly, and can bring additional functionality to the finished part, such as flexibility, insulation or protection.

  • Epoxy and polyamid solutions.
Punctual delivery

Punctual delivery

As we are conscious of the vital importance of on-time delivery, we have a zero-delay policy that ensures that your component is in place when it should be. Our Supply Chain teams maintain consistent communication with customers, transport and raw materials suppliers. Our entire production and stock planning is defined with the sole purpose of efficiency, so we can ship and deliver your product right when you need it.

Cost optimization

Cost optimization

At RPK Group we guarantee the highest quality, with zero defects, at a fair price. We are constantly working to forge sustainable, long-lasting, win-win relationships. One of the keys to the best cost optimization in providing custom components lies in improving the efficiency of our manufacturing processes. This entails implementing lean manufacturing and engineering techniques, such as reducing setup times, improving machine utilization, seeking out new materials and suppliers, innovating in technology, and reducing the amount of scrap and waste produced. This is how we can offer you the best component for your solution, at the best price and always on time.

Product testing

Product testing

Our state-of-the-art laboratory at the RPK Technological Center covers a wide range of testing possibilities to ensure our products meet the customer’s specifications. The results obtained by our laboratory engineers during the testing phase are often used to identify other side issues, with the aim of improving the overall final design.

  • Environment tests ranging from -40ºC to 190ºC
  • Fatigue test
  • Relaxation test
  • Cleanliness test
  • Residual test evaluation
  • Residual stress measurement using X-ray diffraction
  • 4D quality

Dynamic test

  • Max. working length: 250 mm
  • Max. dynamic load: 500 N + 12 KN added load
  • Max. temperature dynamic test: 350ºC
  • Max. working length: 100 mm
Operations in clean room

Operations in clean room

When cleanliness is an essential requirement, the presence of fiber or metallic contamination could compromise the functionality of the finished product. Industries such as automotive, medical, electronic, electrical, aerospace or high-tech demand springs and components to be cleaned and packed in specific clean rooms. We have cleanrooms near you, no matter where you are. Our facilities in Europe (Vitoria), North America (Mexico), and Asia (China) have state-of-the-art cleanrooms.

  • 100% controlled environment
  • No human contact with the product
  • Passivation
  • Cleaning and drying in clean room
  • Packing in clean room: VCI, tape and reel. etc.

Get in touch with our engineering and sales teams. We will help you to find the best solution for your application.

Contact us now

Do you need help for your next project?

Contact our engineering and sales teams. We will help you find the best solution for your applications.

+34 945 25 77 00

Contact us