Custom plastic manufacturing

At GMN, our engineering team’s expertise is based on decades of experience manufacturing high-quality, custom-engineered plastic injection molded parts and assemblies for a diverse range of industries including medical, test and measurement, automotive, and aerospace. With advanced plastic manufacturing and decorating capabilities, we offer a complete set of services to take your product from conception to production. Scroll through the gallery to learn more about our plastics capabilities.

Plastics support services

GMN offers value-add services such as engineering resources, tool design, quick-turn prototyping, and mold flow analysis to deliver a superior finished product. Our plastic manufacturing facility in Beaverton, OR is ISO-9001:2015- and AS9100D-certified, and ITAR-compliant. We utilize IQ, OQ, PQ processes to ensure quality and repeatability throughout production and employ an expert team of quality control inspectors and quality engineers. 

Plastic injection molding

Molded plastic parts offer flexible design options and durability in harsh environmental conditions. Plastic injection molding is the cornerstone of our plastic manufacturing and our team of experts can help guide your through the process. In addition, we offer compression molding which is a popular choice for buttons, keypads, gaskets, and a wide range of other components for user interfaces and assemblies.

Plastic tooling

Our complete in-house tooling and automation team provides proper care and preservation of your tools. We continually streamline and improve process performance using fixtures, jigs, and sophisticated robotic automation.

Plastic decorating

GMN offers industry-leading decorating technologies for a variety of material types and surface shapes, including screen and pad printing, spray painting, laser etching, and insert mold decorating.

Plastic machining

Plastic CNC machining can be a cost-effective option for modifying injection-molded parts and low volume production machining of parts from plastic blocks. Our secondary operations include drilling, tapping, and de-gating to achieve smooth finishes or complex geometries.

GMN Plastics


Bringing over 25 years of plastics experience and expertise, GMN Plastics is exclusively dedicated to injection and compression molding production and support services. Click below to learn more about GMN Plastics. 

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