Plastic Overmolding Manufacturers in California

Hi-Rel Plastics is a U.S. custom plastic injection molding company specializing in precision injection molded parts for medical, aerospace, automotive, electronics, industrial, and consumer markets. We provide prototype through high-volume production, engineering-grade resins, insert molding, overmolding, tight-tolerance molding, tooling, assembly, and secondary operations with ISO-certified quality, competitive pricing, fast lead times, and reliable U.S. manufacturing.

We offer injection molding capabilities for various applications. We can work with recycled materials, commodity polymers, biodegradable plastics, and engineering polymers. We have state-of-the-art equipment for multi-cavity molding, large-part molding, and automated molding capabilities.

We use glass-filled materials as well as engineered and commodity resins. We've made products for various industries—automotive, consumer products, containers, electronics, lawn and garden, outdoor furniture, pharmaceutical and more. We also are ISO 9002 registered—contact us today!

A trusted source for superior injection molding, compression molding and transfer molding with 45 years of molding experience and ISO 9001:2000 certification. We offer both Thermoset & Thermoplastic injection molding. Custom precision molded plastic components of all sizes for customers of all sizes.

Newport Plastics does custom injection molding with a full mold shop and capabilities for small and large runs. Our molded plastic parts are used in the medical, aerospace, consumer goods and telecommunications industries. We offer custom mold design, in-house tooling, design and prototyping and design assistance. With 36 years in the business, you shouldn’t hesitate to call Newport Plastics!

Acorn-Gencon Plastics offers a full line of injection molded plastic products and services. With 27 injection molding presses, from 55 to 650 tons, we have the manufacturing capabilities to satisfy all your requirements, and our experienced engineering staff ensure product quality, manufacturing efficiency, and cost-effectiveness. From concept to completion, we can assist you with every step of your project. Give us a call or visit our website to start creating your perfect plastic solutions.

Eagle Mold Technologies specializes in plastic injection mold making for the medical device and electronics industries. We offer insert molds, hot runner, production multi-cavity and quick turnaround aluminum molds.

Here at Forecast 3D, we have a passion for ideas, design, and manufacturing. We are excited to work with your ideas to create a solution for your next project. Whether you need CNC machining, injection molding, stereolithography, selective laser sintering, or hybrid tooling services, we have what it takes to get the job done. We specialize in rapid prototyping, additive machining, and custom short-run production. Give us a call or visit our website for a full look at our exceptional services!

Here at Kennerley-Spratling, Inc., we have provided reliable service and high quality molded products since 1955. We have experience manufacturing custom plastic components for the medical, electronics, consumer, and many other industries. As an ISO 9001:2008 certified company, meeting your specifications with quality molded solutions is our priority. We even have our own class 100,000 clean room and many secondary operations to satisfy all of your requirements. Contact us today!

Aprios Custom Manufacturing is a single-source supplier providing design, molds and injection molding, as well as high-quality, custom plastic molded parts with associated tooling, design and product development. We have experience serving industries such as electronics, biomedical, consumer products, and more. We are proud to be an ISO 9001:2015 certified supplier.

At J.G. Plastics Group LLC, we deliver injection molded plastics solutions that support customers across a wide range of industries requiring precision, consistency, and dependable production. We specialize in producing plastic components engineered to meet exact dimensional and performance requirements, using injection molding processes that allow for complex part geometries, repeatable quality, and efficient production.

At Norck, we take pride in being a trusted partner for precision manufacturing, combining advanced capabilities in sheet metal fabrication, injection molded plastics, and CNC machining. We bring together technology, expertise, and craftsmanship to deliver high-quality components that meet the most demanding requirements.

At Ambrit Engineering, we present ourselves as a precision-focused manufacturer of injection molded plastics dedicated to delivering components that meet demanding performance, dimensional, and cosmetic standards. We work with a broad range of thermoplastics and engineered resins, allowing us to produce molded parts that support strength, durability, and consistent quality across diverse applications.

At Westec Plastics Corporation, we produce injection molded plastics that support demanding industrial and commercial applications where precision and consistency are essential. Our focus is on delivering molded components that meet exact dimensional, functional, and visual requirements while performing reliably in real operating conditions. By understanding how each part is used within an assembly, we ensure our injection molded plastics integrate seamlessly and maintain dependable quality across production runs.

At Servtech Plastics, we specialize in transforming ideas into high-quality rubber products and injection molded plastics through our expert molding techniques. We take pride in our ability to deliver precision-engineered rubber solutions that meet the diverse needs of our clients. Our team utilizes advanced rubber molding technologies to create components with exceptional durability, resilience, and performance.

At JG Plastics Group LLC, we provide injection molded plastics for customers that need durable, precise, and production-ready components for industrial, commercial, consumer, and OEM applications. Our company supports projects involving housings, caps, covers, closures, brackets, fittings, inserts, connectors, and custom plastic parts designed for reliable fit and repeatable performance. We focus on molding solutions that match each part’s function.

An ISO 9001-2000 and AS 9100 certified company, ALTEK offers a full selection of quality contract manufacturing services. We specialize in plastic injection molding, but we also provide exceptional design and tooling services as well. Our engineers will partner with you to take your project from concept to design and design to final product. With an in-house tooling shop and state-of-the-art injection molding machines, we can manufacture everything you need for your perfect plastic solutions.

Piller Aimmco provides plastic injection molding services, including part design and production, material selection, mold production, pad printing, ultrasonic welding, and packaging. We turn your ideas into reality.

At Aero-Plastics Inc., we take pride in being a trusted leader in precision injection molded plastics, delivering innovative solutions that meet the demanding needs of industries worldwide. We specialize in producing high-quality plastic components that combine performance, durability, and accuracy for applications where reliability is essential.

At CIMtech Green Energy, we provide integrated manufacturing solutions that combine injection molded plastics and CNC machining to support customers developing components for demanding technical and energy-focused applications. We produce precision plastic parts and machined components designed for accuracy, durability, and consistent performance, allowing our customers to bring complex products from concept to production with confidence.

Competitive Engineering is a world leader in the manufacturing industry , and we have a huge selection of services to meet the diverse needs of many industries. We offer engineering, design, precision machining, plastic injection molding, 3D printing, and assembly services. Contact us to discover how we can assist you with your next manufacturing project.

At Additive Manufacturing, we present ourselves as a committed partner in injection molded plastics, focused on delivering components that combine precision, durability, and consistent performance across every production run. We work with a wide range of thermoplastics and engineered resins, giving us the flexibility to support applications where strength, cosmetic quality, and dimensional accuracy are essential.

At Gordy Plastics, we present ourselves as an injection molded plastics manufacturer focused on delivering precision, consistency, and dependable performance for customers across a wide range of industries. We work with an extensive selection of thermoplastics and engineered resins, producing molded components that meet demanding dimensional, structural, and cosmetic requirements.

EnviroTech Molded Products offers a wide range of services -- bulk injection molding, conventional injection molding, custom injection molding and more. Contact us today for all of your plastic injection molding needs.