Plastic Injection Molding & Manufacturing Solutions in Manchester, NH
Precision manufacturing is the heartbeat of modern industry. At Ronningen R&D, we specialize in high-tolerance Ronningen R&D: Precision Plastic Injection Molding in Manchester, NH, providing the engineering expertise required to turn complex designs into durable, market-ready products. From the historic Millyard to the growing tech corridors along the Merrimack River, we provide Manchester’s innovators with the tools they need to scale.
High-Performance Manufacturing for the Queen City
While our physical manufacturing facility is located in Michigan, we are proud to serve Manchester, NH, through our advanced Michigan-based operations. We bridge the geographical gap with a robust remote service model, ensuring that New Hampshire businesses receive the same precision and responsiveness as a local shop, backed by the industrial scale of our Midwestern headquarters.
Key Benefits for Manchester Partners:
Rapid Development Cycles: We specialize in rapid plastic prototyping services, allowing Manchester R&D teams to iterate faster and reduce time-to-market.
Technical Versatility: Our capabilities range from standard consumer goods to precision injection molding for medical parts.
Cost-Efficient Solutions: By serving Manchester from our specialized Michigan facility, we offer competitive pricing on low-cost tooling for plastic parts.
End-to-End Assembly: We don’t just mold; we offer comprehensive plastic injection assembly services to deliver a finished component ready for the shelf.
National Logistics: Daily shipping ensures your inventory reaches Manchester with the same reliability as a domestic partner.
Solving Manchester’s Unique Production Challenges
Manchester’s diverse economy—spanning medical technology, aerospace, and consumer electronics—demands a partner who understands strict regulatory environments and harsh regional conditions.
Why Precision Molding Matters in New Hampshire:
Climate Resilience: Products destined for New Hampshire’s fluctuating temperatures—from humid summers to freezing winters—require specific resin selection to prevent warping or brittleness.
Regulatory Compliance: For firms in the medical or defense sectors near Manchester-Boston Regional Airport, we provide full traceability and rigorous quality assurance.
Prototyping Transitions: We help you move from 3D printing to bridge tooling, ensuring your design is optimized for mass production before you commit to high-volume steel molds.
From Concept to Completion: A Success Story
A Manchester-based startup specializing in outdoor environmental sensors recently faced a critical hurdle. Their initial 3D-printed prototypes were failing in the field during the damp New Hampshire spring. They needed a ruggedized, waterproof housing that could be produced in high volumes without losing the intricate internal clips required for their electronics.
They were hesitant to work with a partner outside of New England, but after reviewing our Michigan-based operations and our history of serving Manchester, NH, they chose Ronningen R&D.
The Strategy: Our engineering team performed a comprehensive Design for Manufacturing (DFM) analysis. We suggested a specific polycarbonate/PBT blend to handle the UV exposure and chemical resistance required for outdoor use.
The Outcome:
Precision Tooling: We developed a multi-cavity tool that ensured 100% part repeatability.
Scalable Success: Within six weeks, we were shipping 10,000 units directly from our Michigan facility to their Manchester assembly site.
Market Leadership: The client successfully secured their Series B funding, citing their reliable manufacturing partnership as a key factor in their operational stability.
The Ronningen R&D Engineering Process
We serve Manchester, NH, with a streamlined, professional workflow designed for remote collaboration:
Step 1: Technical Consultation: We discuss your specific Manchester project goals, material requirements, and budget constraints.
Step 2: DFM Analysis: Our engineers review your CAD files to identify potential molding issues like sink marks or uneven wall thickness.
Step 3: Tooling Construction: Molds are fabricated at our Michigan headquarters using high-precision CNC machining.
Step 4: Sampling & T1 Approval: We ship first-article samples to your office in Manchester for inspection and testing.
Step 5: Production & Logistics: Upon approval, we move to full-scale production and manage the shipping to your New Hampshire location.
Our Active Certifications


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.
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 Manchester, NH
Q1: What plastic injection molding services does Ronningen offer in Manchester?
Ronningen offers a wide range of plastic injection molding services, including traditional molding, over molding, insert molding, and structural foam molding. We also provide secondary services like machining, electroplating, pad printing, part marking, and custom packaging, all completed in-house. These services help reduce lead times, streamline production, and ensure that your parts meet both functional and aesthetic specifications.
Q2: Can Ronningen handle both small prototypes and high-volume production?
Yes, Ronningen is equipped to handle both small-batch prototypes and high-volume production runs. Our advanced equipment allows us to efficiently scale production to meet your needs, whether you need a few hundred parts or millions. We ensure that every part is produced with precision and quality, regardless of the production volume.
Q3: How does Ronningen ensure the quality of molded parts?
We follow ISO 9001:2015 certified processes for quality management and use advanced inspection systems, such as CMMs, vision cameras, and leak testers, to ensure that each part meets your exact specifications. Our quality control team monitors every stage of production to ensure that all parts meet the required standards of performance, durability, and aesthetics.
Q4: What types of materials does Ronningen work with for plastic injection molding?
Ronningen works with a variety of materials, including polypropylene, ABS, polycarbonate, and high-performance thermoplastics. We assist in selecting the best material based on your part’s function, durability, and environmental conditions. We also offer custom coloration to match your design specifications and enhance the visual quality of your parts.
Q5: Does Ronningen provide prototype injection molding services?
Yes, Ronningen specializes in prototype injection molding. Our rapid prototyping services allow you to test and refine your designs, materials, and functionality before committing to full-scale production. This helps reduce risks and ensures that the final product meets all of your specifications and requirements.
