Premier Plastic Injection Molding Services in Annapolis, MD
Ronningen is a trusted name in plastic injection molding and manufacturing, proudly serving Annapolis, Maryland, with top-quality plastic parts. With over 50 years of experience, we specialize in producing high-precision molded plastic components for a variety of industries, including medical devices, automotive, aerospace, and electronics. Our facility is equipped with the latest injection molding technology, ensuring fast, efficient production for both prototypes and high-volume runs.
We offer more than just injection molding. Ronningen’s services include over molding, insert molding, and ultrasonic welding, along with secondary operations such as electroplating, part marking, and packaging. Our goal is to streamline your manufacturing process, reduce lead times, and deliver high-quality products that meet your specifications. Whether you’re launching a new product or scaling existing production, Ronningen is your trusted partner in Annapolis.
Complete Plastic Manufacturing Solutions for Annapolis Businesses
Ronningen offers a comprehensive range of plastic manufacturing services to businesses in Annapolis, MD. Our services include plastic injection molding, over molding, insert molding, and structural foam molding, all designed to meet the specific needs of your project. Whether you need a few parts for testing or a high-volume production run, our flexible systems allow us to scale production while maintaining the highest quality standards.
We also offer secondary operations such as machining, leak testing, electroplating, and pad printing to ensure that your parts meet both functional and aesthetic requirements. With our in-house capabilities, we provide efficient, cost-effective solutions, reducing the need for multiple suppliers and streamlining the entire production process. Ronningen’s team works closely with you to ensure the final product meets your exact specifications.
Advanced Manufacturing and Precision Molding for Annapolis, MD
At Ronningen, we combine the latest molding technology with expert engineering to deliver high-quality plastic parts for Annapolis manufacturers. We handle everything from the initial design and tooling to production and secondary services like machining and custom packaging. Our facility features high-tonnage machines and advanced molding capabilities, allowing us to produce complex parts with tight tolerances and precise dimensions.
Whether you need ultrasonic welding, structural foam molding, or multi-material injection molding, Ronningen’s team ensures that each part meets your specific requirements. With a focus on quality, efficiency, and cost-effectiveness, we provide a one-stop solution for all your plastic manufacturing needs in Annapolis.
Why Annapolis, MD Manufacturers Choose Ronningen
Ronningen stands out as a reliable manufacturing partner for Annapolis businesses due to our comprehensive approach to plastic injection molding and value-added services. We offer precision molding, over molding, insert molding, and structural foam molding, ensuring that every part is manufactured to the highest standards. Our team uses advanced technologies and materials to deliver consistent, high-quality results for even the most complex parts.
In addition to molding, we provide secondary operations such as machining, leak testing, electroplating, and custom packaging, ensuring that every aspect of your production is handled in-house. By working with Ronningen, Annapolis manufacturers benefit from shorter lead times, reduced costs, and a streamlined supply chain. We’re committed to helping you succeed by providing reliable, efficient, and cost-effective solutions.
Serving Annapolis with Fast and Reliable Manufacturing Solutions
Ronningen’s Annapolis facility is strategically located to provide local businesses with fast, reliable plastic injection molding and manufacturing services. Our team is committed to delivering high-quality parts with quick turnaround times, ensuring that your production schedules are met without delay. Whether you’re working on a small batch of prototypes or large-scale production runs, Ronningen has the expertise and resources to meet your needs.
Our in-house capabilities, including machining, leak testing, part marking, and packaging, allow us to provide complete solutions for your manufacturing needs. By offering all of these services under one roof, we reduce the complexity of your production process and ensure that your parts meet the highest standards of quality.
Precision Plastic Injection Molding in Annapolis, MD – Ronningen RD




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.
("ITAR," 22 CFR 120-130) REGISTERED
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.
(MBP3)
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.
Our Comprehensive Manufacturing Services: Plastic Injection Molding & More
Assembly & Sub-Assembly
At Ronningen Research and Development, we provide expert Assembly & Sub-Assembly services for seamless integration of components. Whether it's simple assemblies or complex multi-part solutions, we ensure precision and efficiency in every process.
Custom Coloration
Our Custom Coloration services offer tailored color options to meet your design and branding needs. We use advanced Plastic Injection Molding techniques to ensure long-lasting, consistent colors for your products.
Custom Cutting Parts
Ronningen Research and Development specializes in Custom Cutting Parts using state-of-the-art machinery. We provide accurate cuts for a variety of materials, meeting the specific needs of your project.
Drilling
We offer high-precision Drilling services to create exact holes in various materials. Our advanced equipment ensures accuracy and quality for projects requiring tight tolerances and consistent results.
Electroplating
Our Electroplating services enhance part durability and corrosion resistance with high-quality metallic coatings. We provide superior finishes for applications in automotive, electronics, and more.
Heat Staking
Heat Staking at Ronningen Research and Development creates strong, reliable bonds between plastic components without the need for additional materials. This process is ideal for parts requiring secure assembly and durability.
Hot Stamping
Hot Stamping services provide a high-quality finish with precision and efficiency. We use advanced techniques to apply logos, designs, and text to parts, ensuring a clean and lasting imprint.
Insert Molding
Insert Molding allows us to mold plastic around metal or other materials to create strong, integrated components. This service provides enhanced functionality and durability for complex applications.
Labeling
We provide precise Labeling services that ensure clear, durable markings for traceability, branding, and compliance. Our labeling process guarantees that your parts are correctly identified and meet industry standards.
Leak Testing
Our Leak Testing services verify the integrity of your products, ensuring they meet safety standards. We provide airtight and watertight testing to prevent failures and guarantee quality.
Machining
We offer high-precision Machining services for custom parts. Using advanced CNC equipment, we deliver consistent, high-performance components for a variety of industries.
Milling
Our Milling services create intricate parts with high accuracy. We use advanced equipment to ensure precise cuts and finishes for your custom projects.
Over Molding
Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.
Packaging, Custom
Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.
Pad Printing
We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.
Over Molding
Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.
Packaging, Custom
Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.
Pad Printing
We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.
Part Marking
Our Part Marking services at Ronningen Research and Development ensure clear and accurate markings for identification and traceability. We use advanced techniques to apply markings that meet industry standards.
Painting
At Ronningen Research and Development, our Painting services enhance the aesthetic and protective qualities of your parts. We apply durable coatings for both functional and cosmetic purposes.
Silk-screening
We offer Silk-screening services at Ronningen Research and Development for durable, high-quality prints on parts. This process is ideal for logos, designs, and labels, providing precise results for a variety of materials.
Shielding
Our Shielding services at Ronningen Research and Development protect components from electromagnetic interference. We use advanced materials and techniques to ensure reliable performance and compliance with industry standards.
Shipping
At Ronningen Research and Development, we handle Shipping with care, ensuring that your products are securely packaged and delivered on time. Our reliable shipping services help you get your products to the market quickly and safely.
Spin Welding
Spin Welding services at Ronningen Research and Development provide strong, durable bonds for plastic parts. This technique is ideal for creating seamless joints without the need for additional materials.
Structural Foam Molding
We offer Structural Foam Molding at Ronningen Research and Development for lightweight, durable plastic parts. This service provides strong components with a reduced weight, ideal for applications that require high strength without the added bulk.
Taping
Our Taping services at Ronningen Research and Development are designed to provide secure adhesion and protection for your products. We offer custom taping solutions to meet the needs of various industries.
Trimming
At Ronningen Research and Development, we provide Trimming services to finish and refine your parts. Our precise trimming process ensures clean edges and perfect finishes for your molded components.
Ultrasonic Welding
Ultrasonic Welding at Ronningen Research and Development uses high-frequency sound waves to create strong, precise bonds between plastic parts. Ideal for delicate applications, this process ensures high-quality, durable results without the need for adhesives.
Frequently Asked Questions About Plastic Injection Molding in Annapolis, MD
As a trusted provider of plastic injection molding and manufacturing services in Annapolis, Ronningen frequently receives questions from businesses about our services, processes, and capabilities. Below, we’ve answered some of the most common questions we receive from our clients in Annapolis to help you better understand how we can support your manufacturing needs.
Q1: What types of plastic injection molding services does Ronningen provide in Annapolis?
Ronningen offers a comprehensive range of plastic injection molding services, including standard injection molding, over molding, insert molding, and structural foam molding. Additionally, we provide secondary services such as machining, electroplating, pad printing, part marking, and leak testing. Our integrated approach allows us to handle all aspects of production under one roof, reducing lead times and improving quality control.
Q2: Can Ronningen handle both small prototypes and large production runs?
Yes, Ronningen is equipped to handle both small-batch prototypes and large-scale production runs. Our flexible production system allows us to accommodate both short-run prototyping and high-volume manufacturing, ensuring quality and precision at every scale. Whether you need a few hundred parts or millions, Ronningen delivers consistent results with every production run.
Q3: How does Ronningen ensure quality during production?
We adhere to ISO 9001:2015 standards for quality management, utilizing advanced quality control systems, including CMMs, vision inspection systems, and leak testers. Our team monitors the production process closely at every stage to ensure that each part meets your exact specifications. This commitment to quality ensures that every part is made to perform consistently and reliably.
Q4: What materials does Ronningen use for injection molding?
Ronningen works with a wide variety of materials, including commodity plastics like polypropylene and ABS, as well as high-performance resins. Our team assists you in selecting the right material based on your part’s function, durability, and performance requirements. We also offer custom coloration services to ensure your parts meet your aesthetic needs.
Q5: Does Ronningen provide prototype services for new product designs?
Yes, we specialize in prototype injection molding to help you test and refine your designs before full-scale production. Our prototyping services enable you to validate materials, dimensions, and functionality before committing to large production runs. This helps reduce the risk of costly errors and ensures that your product performs as expected.