Automotive OEM Plastic Manufacturing

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At Sigma International, we are decorative trim specialists, and we have a wide range of production capabilities to make sure our customers have access to the best in decorative parts. That, combined with our expertise and experience, ensures our customers have a high-quality, superior product.

Injection Molding:

Sigma International has many years of experience molding Class A decorative trim. Our injection molding capabilities include:

Call us to find out more about these technologies.

We will work with you to determine which process will work best with your design. Sigma International uses many different materials and molding machine tonnage, specializing in 1,000 ton and under.


  • Polypropylene
  • ABS
  • Styrene
  • Polycarbonate
  • PVC
  • Nylon
  • PC/ABS
  • TPOs
  • TPEs
  • Acrylic
  • More

After the part is molded, we apply our experience and technology to decorate the part according to our customer’s requirements. Decorative capabilities include chrome plating, paint, paint over chrome, vacuum metalizing, silk screen printing, pad printing, laser etching, hot stamping, LED and PVD.

From automotive components to industrial products, our injection molding capabilities are perfect for a wide variety of applications. Learn more about all of the injection molding technologies we have to offer.

LED Lighting: 

Sigma International offers LED functional and ambient lighting for automotive interiors and exteriors. LED lighting has become an important branding tool for vehicle designs. Many different automotive components can be enhanced with LED lighting. These include:

  • Seat backs
  • Doors
  • Steering wheel emblems
  • Interior controls
  • Knobs
  • Buttons
  • Roof racks
  • Running boards
  • Vanity mirrors
  • Glove box lighting
  • Grill emblems
  • Sill plates
  • Exterior puddle lamps
  • Laser-etched trim

In addition to the automotive industry, Sigma International can use LED lighting to enhance elements in the recreational, boating, heavy truck and motorcycle industries.

Our LED technology includes OLEDs, light guides, wave guides and printed LEDs. We use LEDs from the world’s leading LED manufacturers and have a patent pending on interior LED lighting used in knobs, buttons and badges.

Benefits of our LED technology include:

  • A variety of heat sink methods used to dissipate heat
  • Light guides done in both acrylic and optical-grade liquid silicone
  • Package LED applications in extremely tight spaces
  • Mate LED’s to parts decorated with paint, PVD or chrome plating
  • Enhance user experience in autonomous vehicles or robo taxis