Wisconsin Plastic Injection Molding Company
Custom OEM Parts Designed, Tooled and Manufactured in Hartland, WI
Retlaw Industries has manufactured custom thermoplastic OEM parts in Wisconsin since 1977. From our Hartland facility, we help manufacturers develop precise molded components for industrial equipment, consumer products, automated systems and other demanding applications.
Our team manages each project from early product development through engineering, tooling, injection molding, assembly and final inspection. With more than 19 molding presses, in-house machining capabilities and experienced quality control specialists, Retlaw provides a complete manufacturing process under one roof.
An Unmatched Plastic Manufacturing Process
Retlaw Industries works directly with customers to develop dependable plastic components around exact product requirements, performance goals and production volumes. Our integrated process helps reduce outsourcing, simplify communication and maintain consistency from the first design concept through full production:
Plastic Injection Molding for Wisconsin Industries
Retlaw Industries manufactures custom plastic components for Wisconsin OEMs across industrial, commercial and consumer-product markets. Our team can develop molded parts for specialized machinery, production equipment, vehicles, electronics and everyday products. Explore our plastic manufacturing capabilities for:
- Lawn and garden care
- Fitness
- Automation
- Electronics
- Construction
- Appliances
- Agriculture
- Food Production
- Warehouses
- Transportation
From durable equipment components to tight-tolerance parts used in complex assemblies, Retlaw develops plastic products around each industry’s operating conditions, dimensional requirements and production goals.
Wisconsin-Made Plastic Pulleys and Molded Products
Retlaw Industries also manufactures custom plastic products for belt, cable, roller-chain and concrete applications. Products are molded at our Hartland facility using the same engineering, tooling and quality standards applied to custom OEM projects.
Thermoplastic Idler Pulleys
Retlaw produces plastic idler pulleys for flat belts, cables and V-belt systems in multiple sizes, styles and mounting configurations. We also offer mounting adapters so customers can use idlers in multiple different configurations. Benefits include corrosion resistance, reduced belt wear, cooler operation and freedom from rivet fatigue.
Plastic Sprockets and Rebar Products
Our molded product line also includes roller-chain sprockets, single-direction rebar chairs, dual-direction rebar chairs and rebar clips. Each component provides a lightweight, corrosion-resistant option for industrial equipment, automation systems, construction and precast applications.
Why Wisconsin Manufacturers Choose Retlaw Industries
Retlaw combines decades of plastic manufacturing experience with an integrated production process built around quality, communication and long-term customer relationships. Manufacturers work with Retlaw for:
- Custom thermoplastic OEM part manufacturing since 1977
- A Hartland, Wisconsin design and production facility
- More than 19 injection molding presses
- Press capacities ranging from 45 to 720 tons
- In-house engineering, tooling, molding and assembly
- CAD design and 3D prototyping
- CNC machining, wire EDM and sinker EDM
- ISO 9001-certified quality processes
- ERP production tracking
- Domestic and international shipping capabilities
Our team works closely with customers throughout product development and production, providing practical recommendations, responsive communication and manufacturing solutions built around exact project needs.
Request a Quote for Custom Plastic Parts
Partner with a Wisconsin plastic injection molding company capable of managing your project from initial design through final assembly. Retlaw Industries manufactures custom thermoplastic components, injection molds and proprietary plastic products for businesses throughout Wisconsin, across the United States and around the world.
Contact Retlaw Industries to discuss your product requirements, request pricing or begin developing your next molded plastic component.



