Our facility is currently operating as normal, and we remain available to reduce your time to market.

The health and well-being of our employees and partners is our top priority. As we monitor this rapidly changing situation, we continue to use best practices to mitigate risks related to Coronavirus (COVID-19). We have taken measures to manage the virus’ impact by following guidance from the U.S. Centers for Disease Control and Prevention, World Health Organization and local governments.

We are here to support you in any way we can.

Ronningen Logo

Specializing in helping Fortune 100 and 500 Original Equipment Manufacturers reduce their “Time to Market” window.

About Us

Your Plastic Injection Molding Experts for More Than 50 Years. Trusted by the Nation's Leading Companies.

colorful plastic pellets

Since 1966, Fortune 100 and 500 OEMs have been putting our plastic injection molded parts in their products. Today, Ronningen parts are in medical, telecommunications, computer electronics, and aerospace products across the globe. We want you to join the high-caliber cast of those who trust only us with their plastic injection molding, tooling, prototype, and production work.

Quality | Tooling | Engineering Support | Production

Meet Our Team

Deryl Myers, VP, Engineering
Beth Speece, Customer Service
Josh Velie, VP, Operations
Nicole Mostrom, Director of Customer Service
Derick Myers, Project Manager


Welcome to Ronningen. How Can We Help You?

With more than 50 years of experience and a broad range of customers, our knowledgeable staff is ready to talk plastic injection molding with you. Thermoplastic resins, customization options, product development, market support technologies, manufacturing processes, or the best approach for your project, we’re here to help.

We pride ourselves on excellent customer service and our accomplishments with advanced technology. In many cases, the innovation and originality of our approaches have redirected the future of plastic design, prototype, and production for the manufacturing industry.

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We would love to meet you and your team to discuss your next program. Please contact Nicole Mostrom at 269-649-0520 Ext. 132 to plan your visit or to answer any questions you may have.

Made In America icon

Ronningen Research and Development has engineered millions of parts since its founding in 1966, always with quality, always with integrity. READ MORE

You, as our customer, can rest assured your parts are fully manufactured according to ISO 9001 quality standards from concept to market. As the first research firm in the nation to implement a fully integrated CAD/CAM system, linking our design and manufacturing processes, you can also rest assured our finger is on the pulse of today's advanced technology.

Environmental Stewardship
Keeping our nation's air, water, and land clean is our commitment to future generations. Responsible manufacturing is paramount at Ronningen. We've been a Michigan Business Pollution Prevention Partner (MBP3) since 1999; adopting pollution prevention policies, committing to reductions, and sharing our successes with other MBP3 members.

Michigan Department of Environmental Quality logo

Pure Michigan
You're invited to tour our 66,000-square foot manufacturing facility in Vicksburg, Michigan, located 30 minutes south of Kalamazoo and an hour east of beautiful Lake Michigan. You'll see our full range of capabilities, meet with our in-house engineering, and manufacturing departments, and maybe even hear the story of Ronningen's founder delivering Xerox their parts - personally, piloting his own small plane - in the days before FedEx.

Call for your quote today, 269-649-0520.


Quality That Only Comes With Experience. We’ve Done This Since 1966.

ISO Certificate

ISO 9001:2015
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UL Listed logo

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ITA, 22 CFR 120-130 REGISTERED logo

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Quality truly is built into our parts and processes. Working by the mantra “Quality Products from Concept to Market,” we strive for Six-Sigma quality in all jobs through cycle time reduction, benchmarks, timeliness, cost, innovation through technology, process improvement, customer satisfaction, and team and individual development for our organization.

Our production employees are trained to look for potential defects on every part; based on predetermined quality standards.


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Engineering Support

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ISO 9001

Our ISO 9001 certified quality management system is registered and certified by NSF International Strategic Registrations and based on a number of quality management principles including:

  • A strong customer focus
  • Support of top management
  • Adherence to a process approach
  • Continual improvement

Under the scope of our registration are the following services:

  • Prototype plastic injection tooling for molded parts
  • Engineering evaluation samples
  • Pilot and production plastic components

Our accreditation from NSF provides assurance to our customers that our certified components and products comply with the technical requirements of ISO 9001.


QMMY2.E116158 Fabricated Parts - Component
Underwriters Laboratories is an independent product safety testing and certification organization working for public safety since 1894. Since its founding, U/L has held the reputation as the undisputed leader in product safety and certification, giving consumers peace of mind about the products they use.


All manufacturers of defense articles, related data, and defense services as defined on the United States Munitions List (Part 121 of ITAR) are required to register with the Directorate of Defense Trade Controls (DDTC). ITAR registration is a means to provide the U.S. Government with necessary information on who is involved in certain manufacturing, brokering, and exporting activities.


Commitment to our air, land, and water quality is paramount at Ronningen. Since 1999, we’ve served as a Michigan Business Pollution Protection Partner; adopting pollution prevention policies, committing to reductions, and sharing our successes with other MBP3 members.

You get more than 50 years of custom tooling experience when you choose the professionals at Ronningen for your plastic injection molding tooling needs. We leverage our experience with today’s technology bringing you a superior product and creating reliable, consistent parts, time after time.

Excellence in Every Part
Our quick-turn production is your competitive advantage. Your lead-times are kept short with the latest in machining and software advancements. Plus, your parts are made to stringent ISO 9001 quality standards.

Lead-time for quick turn around plastic injection tooling services is two to six weeks based on complexity.

Click here for more Ronningen equipment and core technologies.

Have questions about flow? Knit lines? Gating? Did you know we can produce a virtual mold flow of your job that you can view as a web page? Or, that you can see a full analysis of your injection molded part in just a few days?

Paving the Way
Even after 50+ years, we stay on top of the ever-changing design software industry.

Not only do we understand the ongoing upgrades and advances, we implement them on meticulously maintained machines.

We leverage the latest technology in Computer-Aided Design, making parts quickly and accurately for multiple uses across multiple industries.

No matter your software of choice, we can work in that platform ensuring you get strong collaboration and accelerated turn around.

Electronic file sharing, schedule-sharing, and video conferencing team our staff with yours, promoting seamless communication from concept through completion.

Contact us at any point during your process, we offer design and engineering support whether you’re in the R&D stages or ready for a full production run.

Within our 66,000 square foot facility, three shifts operate around the clock, expertly fabricating your parts according to your schedule and your volume requirements. Each of our crews maximizes the capacities of our extensive equipment and machine capabilities, 24/7, to meet your plastic injection molding requirements.

Talk to us about your quantity requirements. Minimums are determined by part design, including set-up and material requirements, and maximums are negotiable. We recently produced in excess of 2 million parts for one project.

Mold Making
Our molds are made using the material most appropriate for your needs: aluminum, if speed and economy are your priorities; P20 stainless steel if maximum longevity is your top requirement.

You can get the right product for the job with our access to industry materials specialists who are experts on the properties and behaviors of hundreds of different materials. Maybe achieving your required strength is as simple as adding a certain filler, you’ll get the answer.

Commonly used resins include:
ABS (Acrylonitrile Butadiene Styrene): Medium strength. Used for light, rigid molded parts like piping or automotive body parts. Ex. LEGO bricks

PC-ABS blends (Acrylonitrile Butadiene Styrene/Polycarbonate): High strength, heat resistance, and rigidity. Used for automotive, electronics, and telecom applications.

LCP (Liquid Crystal Polymer): Excellent in thin applications, high chemical resistance. Common for electrical and mechanical parts, also food storage containers.

PA6 (Nylon): Excellent toughness and wear/chemical resistance. Used for medical, automotive, and industrial components.

PEEK (Polyether ether ketone): Extreme temperature/pressure applications, sterilize in autoclave, FDA-approved for food contact. Used in aerospace, automotive, and medical applications.

Polycarbonate: Holds tight tolerances, variety of colors, transparency with impact resistance. Common in aircraft, electronics, and telecom applications.

Polypropylene (PP): Good moisture resistance, impact strength, low cost. Suitable for automotive, marine, and RV parts.

PolyVinylChloride (PVC): Very dense, rigid, readily available and inexpensive.

Acetal (POM): High wear resistance; good for bearings, gears, and other functioning parts.

Acrylic (PMMA): ideal for applications where a polycarbonate wouldn’t work well such a lenses requiring lasting clarity.

Copolyesters: used in the medical industry because of tolerance to aggressive cleaning products.

Have questions? Call 269-649-0520 and ask for Deryl.

Additional Services

Flexible and responsive, our assembly department creates seamless transitions to meet your customization needs as your part evolves from plastic pellets to finished product.

Assembly & Sub-Assembly

Custom Coloration

Custom Cutting Parts



Heat Staking

Hot Stamping

Insert Molding



Leak Testing



Over Molding

Packaging, Custom

Pad Printing

Part Marking





Spin Welding

Structural Foam Molding



Ultrasonic Welding

Molding Highlights

Nissei HM7-C (Portable) 4.33” min close
.25 oz. (.016 #) 8.66” max opening
7.7 Ton 4 x 4 BTBs

Nissei FN-1000-12A 7.8” min close
3.5 oz. (.219#) 26.3” max opening
89 Ton 15 x 15 BTBs

Nissei FN-2000-18A 7.9” min close
7.7 oz (.481#) 28.3” max opening
123 Ton 16.5 x 16.5 BTBs

Nissei FNX 110III 12A 7.9” min close
3.4 oz (.212#) 28.3” max opening
123 Ton 18.1 x 18.1 BTBs

Nissei FNX 110III 12A 7.9” min close
5.3 oz (.312#) 28.3” max opening
123 Ton 18.1 x 18.1 BTBs

Nissei FN-3000-25A 9.8” min close
10.5 oz (.656#) 33.5” max opening
154 Ton 18.9 x 18.9 BTB’s

Nissei FN-4000-36A 9.8” min close
14.8 oz (.925#) 37.4” max opening
197 Ton 20.9 x 20.9 BTBs

Nissei FN-5000-50A 11.5” min close
21.5 oz (1.344#) 41.3” max opening (-1.75”)
239 Ton 23 x 23 BTBs

Nissei FN-6000-71A 7.6” min close
30.0 oz (1.875#) 45.2” max opening (-3”)
309 Ton 25.9 x 25.9 BTBs

Nissei FN-7000-100A 9.75” min close
34.0 oz (2.125#) 52” max opening (-6”)
389 Ton 28.9 x 28.9 BTBs

Nissei FN 9000-210 Low 11.75” min close
71 oz (4.438#) 52” mazx opening (-6”)
618 Ton 38 x 38 BTBs

HPM1100-WP-160 15” min close
160 oz (10.00#) 70.0” max opening
1100 Ton 60 x 45 BTBs

Newbury Vertical Shuttle 6” min cloxe 8.75” max close
5.0 oz (.313#) 14.75” max opening
30 Ton 8 x 10 Platen Size

Arburg Allrounder
25 Ton 8.5 BTBs

Secondary Equipment Highlights

Branson Ultrasonic Welder
3500 Watt w/ 6” Stroke

Dukane Ultrasonic Welder
1500 Watt

Kensol Hot Stamper
10 Ton

STI Hot Stamper
HSCS 150

Branson Spin Welder
SW200G 3.5” Stroke

Dukane Thermal Heat Stake
4200 Watts—1.5 Ton

Tampoprint Pad Printer
Sealed Inc Cup 130

Pat-A-Print Pad Printer
STI 812

Cincinati Test Systems
I-28 Leak Tester

Kwik Mark
Dot Peen System


Brown & Sharp
Microhite CMM
PC-DMIS Software

Non-Contact Vision Inspection


Have questions? Want a quote?

Please know we respect your privacy. Your information will remain internal, no third parties here.

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If you cannot find the answer to your question, click here.

Q. What different kinds of resins do you stock?
We warehouse over 250 different materials in various grades and colors.

Q. Do you accept customer-supplied material?
All the time, we’re happy to accommodate.

Q. What kind of mold material do you use?
Our tooling is made from aluminum or steel.

Q. What’s the min/max volume for jobs?
The minimum is determined by part design (set up costs and material requirements) and the maximum is negotiable. We have produced in excess of 2 million pieces on one particular project. Challenge us!

Q. Who is my sales rep?
We actually don’t have a sales force. We’ve never really needed one because our customers are mostly word-of-mouth. Which, we think, is the best endorsement a company can get.