Top 10 Highly Responsible Rotational Molding Companies


Rotational molding, also known as rotomolding, is a manufacturing process used to create hollow plastic products. It involves heating a mold filled with powdered plastic material, which is then rotated on multiple axes to evenly distribute the molten plastic and form the desired shape. The process allows for the production of large, seamless, and durable plastic products with complex geometries.

Rotational molding companies specialize in providing custom rotomolding services. These rotational molding companies possess the expertise and equipment required to transform clients’ design concepts into high-quality plastic products. They work closely with their clients to understand their specific requirements and offer solutions that meet their needs.

With its versatility and ability to produce cost-effective, lightweight, and durable plastic products, rotomolding has gained popularity in various industries, including automotive, agriculture, furniture, and recreation. Rotomolding companies play a crucial role in bringing innovative plastic solutions to market and contributing to the advancement of modern manufacturing.

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List of Rotational Molding Companies

  • Roto Dynamics
  • Sherman Roto Tank LLC.
  • Sungplastic
  • Western Industries Plastic Products, LLC
  • Fibertech Plastics
  • Horizon Manufacturing Group, LLC
  • Agri-Plastics Custom Rotomolding
  • Elkhart Plastics
  • California Rotational Plastics Inc.
  • RotoMoldUSA
Plastic Rotational Molding Companies-custom rotational molded products

1.Roto Dynamics

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Type of Business: Rotational Molding.
Location: CA, USA.
History: Over 20 years.
Key Products & Service: Rotational Moulding, Product Development, Mold Making, Prototyping.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

For two decades, their steadfast commitment to core values has established Roto Dynamics as the preferred partner for rotomolding and rotational molding among innovative rotation molding companies nationwide. By aligning with our clients’ visions, they have successfully assisted them in creating cutting-edge rotationally molded plastic products. Employing creative design approaches, precision CNC machined tools, state-of-the-art biaxial rotational molding machines, and the highest quality resins in the industry, they consistently deliver high-quality and reliable roto molded products.

In the production of rotational molded plastic parts, this company has the flexibility to utilize polyethylene, a versatile resin. Additionally, they may incorporate polyvinyl chloride or nylon based on specific requirements. The machine can be preheated, with the heat contributing to the efficiency of rotational molding. During the creation of roto molded plastic products, the machine’s temperature may reach up to 700 degrees Fahrenheit.

This plastic rotational molding company employs advanced techniques that not only reduce long-term costs but also enhance the value of numerous products while optimizing client satisfaction. Upon receiving a customer’s design for plastic products, their experts can swiftly adjust material thickness, decrease product weight, and customize the designs of various components to meet specific requirements. They have the ability to mold complex rotomolded parts with a range of plastic resins, colors, textures, threaded inserts, foam fill and molded-in graphics.

2.Sherman Roto Tank LLC.

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Type of Business: Custom Rotational Molding.
Location: TX, USA.
History: Since 2013.
Key Products & Service: Custom Roto Molding, Design and Engineering, Roto Mold Production, Prototyping, Metal and Plastic Welding, Metal Fabrication.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

At Sherman Roto Tank, they understand that your competitive advantage lies in your ability to adapt quickly to industry changes. Whether you operate in Oil & Gas, Chemicals, Integration/Distribution, or Manufacturing, and require custom roto-molding services, you need dedicated partners and they can offer fresh solutions to your everyday challenges.

Their rotational molding design team is ready to meet this challenge by producing complex roto-molded items to the most exacting specifications. They collaborate with you to take your concept from an “idea” to production, engaging in design and engineering with their roto mold engineers, creating computer model simulations, fabricating molds, providing tooling budget and material guidance, identifying secondary processes, approving sample parts, and ensuring quality assurance.

As one of highly responsible rotational molding companies, their commitment is to rapidly deliver innovative chemical packaging and custom roto-mold solutions, allowing you to focus on growing your bottom line.


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Type of Business: Plastic Rotational Molding & Injection Molding Manufacturer.
Location: Dongguan, Guangdong province, China.
History: Over 20 years.
Key Products & Service: Plastic Mold Manufacturing, Plastic Injection Molding, Overmolding, Insert Molding, Rapid Prototyping. Roto Molding.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Sungplastic, a Chinese plastic injection molding factory with over two decades of expertise, is dedicated to rapid prototyping, plastic injection molding production, custom rotational molding and plastic mold fabrication, low volume injection molding and medium to high volume production. Our focus lies in customized plastic part molding across diverse sectors, including electronics, automotive, consumer products, and the medical industry, including low volume injection molding. With a remarkable proficiency in producing low volume injection molded plastic products with precise tolerances and exceptionally high surface finishes, Sungplastic stands out in the plastic injection molding industry and has became one of Chinese biggest injection molding companies.

As a premier plastic injection molded parts and roto moulding products manufacturer, we specialize in working with engineering-grade plastics, thermoplastics, modified plastics, and composites to create tailor-made molded plastic components. Our commitment extends to meeting specific requirements such as chemical resistance, flexural strength, durometer, and yield strength.

Drawing on a wealth of professional plastic roto molding and injection molding knowledge and volume injection molding production experience, Sungplastic has proudly served numerous countries and established brands worldwide as a trusted plastic products fabricator.

4.Western Industries Plastic Products, LLC

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Type of Business: Rotational Moulding.
Location: KS, USA.
History: Over 35 years.
Key Products & Service: Rotation Molding, Blow Molding, Design and Engineering, Insert Molding, Drilling or tapping, Routing, Trimming, Riveting.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

For over 35 years, Western Industries Plastic Products LLC has been the trusted name in custom blow molding and roto moulding, specializing in large parts. Their array includes 15 lb. to 75 lb. accumulator head machines, boasting platen sizes up to 96”. With a collective engineering experience exceeding 70 years, their team is well-equipped to handle even the most intricate requests within the 1-45lb part range for blow-molded products and roto molded parts.

As a premier OEM contract manufacturer of custom blow-molded products and roto moulding components, Western Industries utilizes cutting-edge equipment and technology to seamlessly bring concepts to sale with unmatched quality, precision, and repeatability. As a dedicated blow molding and roto moulding company, they leverage their expertise, drawing strength from skilled team’s commitment to service and quality.

Their expansive blow molding facilities cover 500,000 sq. ft., with specific areas allocated for manufacturing, assembly, warehousing, and shipping. With machine shop capabilities, they provide customers with a streamlined process from concept to production capability.

Operating 19 blow mold machines, they mold, finish, and assemble a diverse range of parts. They continually enhance our capabilities by strategically incorporating new equipment to meet evolving customer needs. Whether handling large production runs or accommodating multiple-component part demands, they are well-prepared to exceed expectations.

5.Fibertech Plastics

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Type of Business: Roto Plastic Molding.
Location: IN, USA.
History: Since 1999.
Key Products & Service: Custom Rotational Molding Parts Manufacturing, Custom Plastic Parts Production, In-House Design and Engineering, Prototyping.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Fibertech Plastics is a customer-centric plastics solutions company committed to delivering cost-effective and efficient plastic material handling equipment, repair, and recycling services. With extensive experience in rotational molding for plastic material handling products, they take pride in catering to the unique requirements of the customers.

They excel in providing exceptional custom plastic rotational molding services, ensuring short lead times and comprehensive assistance from concept to production. Their teams are dedicated to delivering high-quality solutions, and all the materials and designs are FDA approved, allowing to handle even the most intricate projects. Consider them your comprehensive resource for all your rotational molding needs.

Among numerous rotational molding companies, they specialize in designing and manufacturing plastic material handling products, serving as a solutions provider for plastic containers. Their commitment is to meet the daily needs of our customers, anticipate future goals and requirements, and respond with innovative and competitive products and services that surpass expectations. They produce top-notch, custom-engineered plastic products, including bulk containers, plastic pallets, and plastic lockers.

6.Horizon Manufacturing Group, LLC

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Type of Business: Custom Rotational Molder.
Location: WI, USA.
History: Since 2012.
Key Products & Service: Product Development and Design, Contract Rotational Molding, Rotational Mold Design and Fabrication, Metal Fabrication, Void Fill Foaming.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Since 2012, this team has been dedicated to establishing a manufacturing partnership that surpasses their customers’ expectations in service, delivery, and quality. Their vision is to lead in rotational molded products and services.

With over 35 years of industry experience, they possess the team expertise to address your manufacturing needs. Their motivation stems from the ambition to set industry standards by providing our clients with an exceptional roto molding manufacturing experience.

They have the capability to design and manufacture in-house, adapt to meet specific client needs, maintain EPA certification, continually invest in our team, facilities, and equipment, and serve a diverse range of industries. Their newly constructed expanded facility enhances production capacity, and they proudly hold ISO 9001:2015 certification.

At Horizon Manufacturing Group LLC, they take pride in their pioneering role in rotational molding. Utilizing cutting-edge technology, they create a diverse range of products tailored to various industries. Their core competency lies in the precision of rotational molding, where they transform raw materials into seamlessly designed, durable products.

7.Agri-Plastics Custom Rotomolding

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Type of Business: Custom Rotational Molded Products Manufacturing.
Location: OH, USA.
History: Over 30 years.
Key Products & Service: Rotational Molding, 3D CAD/CAM Design, Finishing and Assembly, Assembly and Packaging, Robotics/CNC Trimming.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Agri-Plastics Custom Rotomolding specializes in producing high-quality roto molded parts using top-notch aluminum metal molds. Whether you need large or small products in small or large quantities, there is no limit to what they can create for you. They are dedicated to turning your ideas into reality, and at their facility, they refine and test the products through hands-on experience. Their mission is to provide the best quality plastic products, designing solutions that exceed their customers’ expectations and establishing a global reputation for reliability and durability.

They offer custom rotational molding for various applications, including agricultural, commercial, recreational, and more. At Agri-Plastics Custom Rotomolding, their primary focus is on delivering top-tier custom rotational molding services. With over 30 years of experience in CAD rotomolding design, they are committed to manufacturing and designing products that not only meet but exceed the customers’ expectations.

8.Elkhart Plastics

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Type of Business: Custom Rotational Molded Components Fabricator.
Location: USA.
History: Since 1988.
Key Products & Service: Rotational Molding, Product Design and Engineering, Mold Making, Secondary Finishing.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Elkhart Plastics stands as the foremost provider of engineered plastic products across multiple industries, demonstrating a commitment to technical leadership, environmental stewardship, innovation, and being the preferred employer.

Their philosophy revolves around approaching each project with an open mind. Prioritizing a deep understanding of your needs, they formulate an individualized strategy for rotomolding your product.

Having engaged in rotomolding since 1988, they have crafted numerous roto-molded products for a diverse range of industries nationwide. Plastic rotomolding, a process they specialize in, yields high-quality and durable parts. This manufacturing technique ensures virtually stress-free parts with consistent wall thickness. Leveraging their design flexibility and expertise, they have the capability to create both simple and complex parts at a reasonable cost.

Elkhart Plastics has played a pivotal role in helping customers enhance throughput, reduce costs, and enhance aesthetics by transitioning products from fiberglass, metals, and other materials to rotational molded plastic parts. Myers Industries, Inc. acquired the assets of Elkhart Plastics. As part of the 2020 Myers acquisition, Elkhart Plastics joined forces with Myers’ Ameri-Kart Corp and Trilogy Plastics business to create the fifth-largest rotomolding business in the U.S among numerous excellent rotational molding companies.

9.California Rotational Plastics Inc.

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Type of Business: Custom Plastic Rotational Molding.
Location: USA.
History: Since 1994.
Key Products & Service: Rotational Molding, Design and Engineering, Mold Making.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Founded in 1994, CRP specializes in manufacturing custom rotationally molded products. Their current product line caters to diverse industries, including marine, medical, construction, irrigation, and the aftermarket automotive sector.

Recognizing the significance of quality and reliability for the customers, CRP meticulously hand-checks each product to ensure it meets the specified standards.

With over 35 years of experience in the rotational molding and plastics industry, CRP is well-equipped to bring your ideas from concept to production.

At CRP, they firmly believe that our manufacturing excellence, coupled with superior customer service, positions them as the preferred supplier for rotational molding needs. Different from other numerous rotational molding companies, Your satisfaction is our commitment.


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Type of Business: Bespoke Rotational Molding.
Location: USA.
History: Since 1994.
Key Products & Service: Rotational Molding, Design and Engineering, Prototyping & Testing.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

With 56 years of expertise in producing top-quality rotational molded parts, RotoMoldUSA has emerged as the leading provider of rotomolded products in the central U.S. Our strategic central location facilitates convenient shipping. Employing cutting-edge rotational molding equipment and processes, we excel in manufacturing large parts, conducting in-house mold repairs, and offering lab testing/leak detection, all underscored by a commitment to quality, timeliness, and cost-effectiveness.

At RotoMoldUSA, we continuously seek ways to enhance efficiency and elevate the quality of our output. Our plant personnel are seasoned experts in plastic and polyethylene molding processes, taking immense pride in their workmanship. The RotoMoldUSA Advantage extends to our ability to assist in the design, prototyping, and testing processes.


A reputable rotomolding company like Sungplastic employs skilled technicians who can design and fabricate molds, select suitable materials, and ensure precise production. We maintain strict quality control measures to deliver products that meet industry standards and customer expectations. Additionally, we may offer additional services such as mold maintenance, product assembly, and finishing.

When you choose us for your rotational molding needs, we are your partner. We are an extension of your team beginning with product design and engineering, to mold making and roto parts manufacturing, through secondary finishing, quality assurance and shipping.

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