The Proven Contract Manufacturer OEMs Trust

A Steady Trajectory of Success

Constant innovation, steady growth, and measured expansion define our long history of manufacturing complex components for medical, aerospace, defense, electronics, and automotive OEMs. What began as a local, family-owned machining business has since grown to 275+ employees across three facility locations, with the capacity to produce tens of millions of parts annually. Our 2023 acquisition by Tinicum has accelerated our growth through investment in technology and capacity, enabling greater value engineering that helps our customers stay in control of costs and timelines.

Why Leading OEMs Choose Greene Group

On-time Delivery

Our disciplined program management and in-house controls keep timelines predictable and deliveries on time.

Uncompromising Quality

Award-winning manufacturing processes and rigorous validation deliver consistent performance across every part and run.

Value Engineering

Vertical integration reduces lead time and cost for dependable efficiency without sacrificing excellence.

Challenging Applications

Leading-edge manufacturing technologies handle complex geometries down to micro scales without quality trade-offs.

Long-Term Partnership

Customer focus is central to our organization, as we scale and invest as needed to support our customers’ significant growth trajectories.

Concept to Production

Full-scope services, including in-house mold making and design, automated assembly, and secondary operations, help our customers reduce risk and control outcomes.

What Our Customers Say

“GGI has been a 5-star partner for us. After working with GGI through several projects over 6 years, I have found them to be incredibly responsive, and they have provided us with unparalleled quality on some of the most challenging MIM components. GGI has consistently developed novel ways to design their tooling to meet our demanding specifications on the latest surgical technology.”

Sr. Manufacturing Engineer,

Large Medical Device OEM

“GGI has remained a top-tier supplier long term. The highest levels of responsiveness and professionalism set them apart in support of rapidly changing requirements and extremely dynamic end customer requirements. Much of our success ties directly into these very high levels of support. Continuing thanks to GGI for all the support over all these years.”

Purchasing Manager,

Leading Equipment and Systems Manufacturer

“I wanted also to share that if I am ever asked to rank all of the vendors I have worked with according to responsiveness, achieving goals, communication, skill, and overall medical product knowledge, GGI wins, hands down. It is a pleasure seeing the project turn into a trusted process. Thanks to you both and your team!!!!”

Design Assurance Engineer,

Large Medical Device OEM

“Over the past several years GGI has worked with my project team to develop components for multiple innovative new devices. The complex nature of our designs makes these projects challenging and require a lot of personal attention, crisp communication, and creative problem-solving to meet our project targets of timing, cost, and superior quality. GGI has demonstrated their willingness and ability to deliver in these areas, making them a valued partner for our business.”

Director of Advanced Instruments

Large Medical Device OEM

“GGI’s project management support is the best of any MIM house we have worked with. We are confident when placing a new tooling PO with GGI that we are going to close the project on time. When we get into production, GGI partners with us to continually improve the process and cost over time. We ask GGI to help us compete and they are always there looking for new ways help us to advance.”

Sr. Buyer

Large Medical Device OEM

“GGI rapidly develops complex machined components and assemblies with the highest possible quality. They take on our most challenging parts right from the prototyping stages, support all development efforts and carry them through to production seamlessly. They support our development efforts as if they are part of the internal team and their level of communication is superb.

GGI has been essential to product success and bringing the highest possible quality devices to the customer. They take on real challenges and work to solve them, not only with highly precise machined parts but with a range of processes and capabilities.”

Sr. Design Engineer,

Large Medical Device OEM

Work with Greene Group Industries

Bring your skills to one of our three U.S.-based facilities and work for a respected industry leader that recognizes your contribution and supports your career growth. We’re proud that many of our employees have been with us for decades and look forward to building long-term professional relationships with committed employees who value a job well done as much as we do.

Explore Careers

A Multi-site, Fully Integrated U.S. Contract Manufacturer Serving Global Markets

Oceanside, California

Manufacturing and corporate headquarters.

Port Huron, Michigan

Manufacturing and the core of our Metal Injection Molding capabilities.

Newark, California

East Bay home to our metal 3D printing development center and sales office.

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Our Facilities

Smart Manufacturing.
Sustainable Solutions.

Our reputation for continuous innovation extends not just to our role as a contract manufacturer, but also to our internal operations.

We’re dedicated to a wide range of earth-friendly initiatives that promote safe, sustainable, responsible business and manufacturing processes. Our efforts include stringent chemical-handling practices to control environmental and employee exposure to potentially hazardous chemicals. We also have robust recycling procedures and policies to minimize impact on local landfills.

Our “green initiatives” demonstrate that environmentally friendly practices are also good business, as we save energy and resources, which translates into lower costs for our customers.