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ABOUT US

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Premix-Hadlock Composites helps manufacturers shift from traditional materials to advanced thermosets that work better for high-demand transportation applications. We support this shift with in-house tooling, process automation, and full program management.



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60+ Year Of Experience
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ABOUT US

Your Trusted Partner in Thermoset Molding and Composite Innovation

With over 60 years of industry experience, we specialize in cost-effective thermoset conversion and custom molding solutions. Our expertise in compression, transfer, and injection molding enables us to support a wide range of projects from intricate, low-volume runs to high-efficiency mass production.

Through smart design, durable materials, and precision tooling, we help companies replace traditional materials with lightweight, high-strength composites that deliver results.

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The Power of Thermoset Composites

Lightweight. Durable. Heat & Chemical Resistant

Our molded thermoset composites including BMC, SMC, and carbon-fiber reinforced materials are designed to:

Withstand extreme temperatures and chemical exposure

Reduce part weight and improve energy efficiency

Enable complex shapes with excellent dimensional stability

Deliver long-term strength and performance

Ideal for sectors like heavy truck, HVAC, electrical, industrial, and electrified transportation (EV).



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Custom Molding Solutions

Efficient, Scalable, and
Built
to Spec

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Our full-service molding capabilities include:

  • Compression, Transfer & Injection Molding
  • Low- and High-Volume Production
  • Low- and High-Volume Production

Each part is crafted with a focus on reducing waste, minimizing cost, and achieving the highest quality standards.

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Full-Service Project Support

From Material Selection to Final Delivery

We provide end-to-end engineering and manufacturing services to bring your product to life:

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Product Development

We collaborate with top material partners to select the optimal resin or reinforcement system.

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Project Support Featured

Design Engineering

Our in-house team helps refine part geometry and performance while reducing manufacturing complexity.

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Project Support Featured

Prototyping

Quickly validate your design with high-fidelity prototypes.

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Project Support Featured

Manufacturing

Efficient production with a focus on repeatability and quality.

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Project Support Featured

Finishing & Decoration

Post-mold services including painting and assembly.

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Automation

Robotics and advanced part-handling drive cost savings and consistency.

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Our Products

Engineered to Perform. Built to Last

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Our components are trusted in high-performance applications where durability matters. We offer:

Engineered Thermoset Composites

Including BMC, SMC & Carbon Fiber

Complex Molded Parts

Produced with precision and speed

Automated Solutions

Ensuring consistency, quality, and scale

Decorative Finishing

Including painting, labeling, and post-processing



Why Choose Premix-Hadlock Composites?

Proven Expertise

Over 60 years of composites experience

Custom Capabilities

In-house tooling, engineering, and automation

Certified Quality

ISO 9001:2015 & IATF 16949:2016

Customer-Centric

Flexible production volumes and collaborative partnerships

Industry Versatility

Serving transportation, industrial, HVAC, electrical, and more



History

COMPANY HISTORY

A detailed look at the Giancola Family’s journey through generations of business leadership, strategic growth, and landmark achievements.

  • GMR was founded by Giancola, Marino & Rossi
1984
  • Ralph Giancola & Tony Giancola acquire the shares of Marino & Rossi
1990
  • GMR acquires the assets of Zehrco as a seperate company
2003
  • Industrial Molded Plastics & Jefferson Thermoplastic Company are acquired
2009
  • Pickens Plastic is acquired
  • Tony Giancola becomes President & CEO
  • GMR Materials Technology in Bolivar OH is acquired
2010
  • Insert Percision Molding in Warren, PA is acquired
2015
  • Suburban Plastics in Grenada, MS is acquired
2019
  • PremixHadlock in Ashtabula, OH is acquired
2022
  • Insight Global Skyware in Smithfield, NC is acquired
2024
  • Thermoset Inc. in Monterrey, MX is acquired
2025


History

COMPANY HISTORY

A detailed look at the Giancola Family’s journey through generations of business leadership, strategic growth, and landmark achievements.

Premix-Hadlock begins operations as a regional supplier of thermoset molded components. Early success comes from building strong relationships in the electrical and utility markets.

1950s–1970s

Expansion into automotive applications leads to facility upgrades and investments in compression and transfer molding technologies.

1980s–1990s

Premix-Hadlock strengthens its engineering team, develops proprietary material blends, and increases capacity for high-volume production. A focus on custom-molded parts helps the company compete nationally.

2000s

Premix-Hadlock strengthens its engineering team, develops proprietary material blends, and increases capacity for high-volume production. A focus on custom-molded parts helps the company compete nationally.

2010–Present


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60+ Year Of Experience
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ABOUT US

Custom Molder of Fiberglass and Carbon-Fiber Reinforced Thermoset Products

Premix-Hadlock Composites offers advanced custom molding services for fiberglass and carbon-fiber reinforced thermoset products. We use compression, transfer, and injection molding techniques to convert traditional materials into thermosets, offering key benefits like reduced weight, lower costs, and fewer components.

This conversion process supports a range of industries that require durable, high-performance parts for demanding applications. We work with our clients to design, develop, and deliver products that meet precise specifications, whether for low or high-volume production runs.

We also handle post-molding operations such as machining, painting, and assembly, providing a comprehensive service package.



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What we Offer

What to Expect When You Work with Premix-Hadlock Composites

  • We offer full-service program management from start to finish. Our team supports you through every step of the process, from concept to production, ensuring that your product meets the highest standards of quality and performance.
  • Our in-house tool design and tooling construction management capabilities set us apart. We also offer robust automation solutions for both production and quality service, making us a reliable choice for businesses that demand efficiency and precision.
  • Our industry certifications, including ISO 9001:2015 and IATF 16949:2016, reflect our commitment to maintaining top-tier standards in everything we do. We aim to build long-term relationships with our clients by delivering reliable results on time, every time.


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What we Offer

What to Expect When You Work with Premix-Hadlock Composites

  • We offer full-service program management from start to finish. Our team supports you through every step of the process, from concept to production, ensuring that your product meets the highest standards of quality and performance.
  • Our in-house tool design and tooling construction management capabilities set us apart. We also offer robust automation solutions for both production and quality service, making us a reliable choice for businesses that demand efficiency and precision.
  • Our industry certifications, including ISO 9001:2015 and IATF 16949:2016, reflect our commitment to maintaining top-tier standards in everything we do. We aim to build long-term relationships with our clients by delivering reliable results on time, every time.


"Drive Change, Create Solutions, and Build the Future"

Join Our Innovative Team

We believe in nurturing talent and fostering growth. When you join our team, you become part of a company with a rich history of excellence. We offer career development opportunities that allow you to grow in a collaborative environment where your ideas and contributions matter.

Employees enjoy a supportive workplace with opportunities for skill development, training, and advancement. We value our people and offer competitive benefits, ensuring that your career with us is fulfilling and rewarding.

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Awards That Highlight Our Industry Leadership

Celebrating Industry Excellence

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We are proud to be recognized for:

Outstanding Supplier Performance

Honored multiple times by Tier 1 manufacturers and global OEMs for consistent on-time delivery and exceptional product quality.

Excellence in Engineering Innovation

Recognized for custom molded thermoset and thermoplastic solutions that push the boundaries of what’s possible in high-performance components.

Sustainability Leadership

Acknowledged for our ongoing efforts to reduce waste and adopt environmentally conscious materials and manufacturing processes.

Customer Satisfaction Awards

Consistently rated highly in client satisfaction surveys, with repeat business from some of the industry's most respected brands.

These awards validate our internal practices and strengthen our commitment to offering world-class solutions that align with evolving client needs.

Industries Served

Best Services For Our Customers

Blog

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A Unified Network of Innovation in Thermoset and Thermoplastic Manufacturing

Premix-Hadlock Composites is proud to be part of a powerful group of companies specializing in engineered composites and molded plastics. Together with Zehrco-Giancola Composites, GMR, Suburban Plastics, and Thermoset Inc. (Mexico), we form an integrated network that delivers advanced molding solutions across industries including automotive, aerospace, electrical, and industrial equipment manufacturing.

Each company within our network contributes unique strengths in material science, engineering, and precision manufacturing—allowing us to serve clients with unmatched versatility, quality, and speed.

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Zehrco-Giancola Composites Inc.

Custom Thermoplastic and Fiberglass Reinforced Molding Solutions

Zehrco-Giancola Composites Inc. specializes in fiberglass-reinforced plastics and thermoplastic molding. With ISO 9001:2015 certification and decades of experience, Zehrco-Giancola produces high-performance, precision-engineered parts for demanding applications in automotive, aerospace, and defense sectors. Their multi-facility operation offers comprehensive molding capabilities-from compression and transfer to thermoplastic injection molding supported by strong engineering expertise and a focus on continuous improvement.

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We look forward to hearing from you and partnering on your next molding project.