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Injection Molding

Products We Design, Manufacture, and Manage

GRT-Mars is a leading contract manufacturer that specializes in custom molding, decorating, assembly, and packaging of injection-molded plastics. Our comprehensive services, delivered through ISO 9001/QS 9000 certified procedures, ensure total quality management through every phase of the project.


Our manufacturing capabilities:
  • Thermoplastic engineering resins
  • 50 to 1000 ton capacity
  • Insert molding
  • Two-color molding
  • Precision fit housings for consumer products
  • Gas-assist
  • Two-shot injection molding
  • Painting and decorating
Our products include:

Case Studies:


The Mack Speaker Grill

Sunroc Midpan

Punch Mugs


Quality Built Into Every Project

Our customers can rely on a premium level of service for every project, whether we are conceptualizing and developing a new product, re-engineering a mature product, or manufacturing and distributing an existing product. Our product design and development services implement concurrent engineering, streamlining the product development cycle by focusing on product and manufacturing design simultaneously.

Our experienced group of professionals provide GRT-Mars’ customers with turnkey management of products from concept to market. Our process allows for full integration into the customer’s product development cycle to meet the demand for outsourcing of manufacturing tasks.

Our supply management services include:
  • Selection and qualification of suppliers
  • Sourcing and procurement of non-plastic components
  • Logistics management
  • Manufacturing of finished assemblies and products
Understanding Your Industry

Our dedication to providing complete service includes understanding and responding to your particular business and industry requirements for the development and distribution of your products. To allow our customers the ability to retain focus on their core competencies, we stay informed of the latest requirements and trends.

Some of the markets we serve with injection molding products include:
  • Automotive
  • Consumer products
  • Audio
  • Appliance manufacturers
  • Medical and healthcare
  • Cosmetic and personal care
Benefits of Working With Us

  • Complete simulation capabilities
  • Full 3-D modeling capabilities
  • Rapid prototyping and functional models
  • Tooling design and construction
  • Value-added manufacturing
  • Worldwide sourcing
  • ISO 9001/QS 9000 certification
  • Cross-functional teams

To Learn More About Our Services…
Call us: 908.233.0101
E-mail us:





GRT-MARS was first certified ISO 9000 in May 2001by SGS, a leading international ISO consulting and audit firm. In August 2003, we received ISO 9001:2000 certification. By earning ISO 9001:2000 certification, GRT-MARS affirms its commitment to a quality management system dedicated to delivering services of consistently high quality — quality that is paramount — to our many, varied clients with global interests.