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Precision Rotational Molding &
Custom Mold Manufacturing

Inborn Plastic Industrial (Ningbo) Ltd. specializes in R&D and production of high-quality rotational molds and rotomolded plastic products for industrial, marine, agricultural, and consumer applications.

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About Inborn

Inborn Plastic Industrial (Ningbo) Ltd. is located in Yuyao, Ningbo, Zhejiang — less than 2 hours from Shanghai, China. We specialize in the research and development of rotomolding molds. Our expertise includes manufacturing both steel and aluminum molds with precision and durability.

We offer professional consultation and customized solutions based on customer drawings, samples, or ideas. Advanced capabilities such as foaming, metal inserts, and integration with injection-molded parts are available to meet complex design requirements.

15+
Years Experience
50+
Global Clients
24h
Fast Response
Rotational Mold Manufacturing

Why Choose Inborn?

We deliver unmatched quality, speed, and innovation in rotational molding.

Strong Design Capability

Our engineering team provides expert design input and technical solutions tailored to your product concept, ensuring optimal mold performance and part quality.

Fast Delivery

Equipped with modern CNC machining and efficient workflows, we guarantee rapid turnaround from design to delivery without compromising precision.

Rapid Feedback

We pride ourselves on responsive communication. Expect quick replies and continuous updates throughout your project lifecycle.

Our Product Center

High-quality rotational molds and custom-molded plastic products for diverse industries.

Rotational Mold

Rotational Mold

Custom steel and aluminum molds for hollow plastic parts. Ideal for floats, tanks, containers, and more.

  • Material: Steel/Aluminum
  • Customizable cavity size
  • Supports foaming & inserts
Aluminum Mould

Aluminum Mould

Lightweight, corrosion-resistant molds ideal for high-cycle production and complex geometries.

  • Fast heat transfer
  • Long service life
  • High dimensional accuracy
Steel Mould

Steel Mould

Durable, heavy-duty molds for large-scale and high-temperature rotomolding applications.

  • High impact resistance
  • Excellent for large parts
  • Long-term durability
Plastic Boat

Plastic Boat (Rotomolded)

Hollow rotomolded boat with excellent buoyancy and impact resistance.

  • Size: 3200mm × 1250mm × 520mm
  • Material: Polyethylene
  • UV stabilized, marine-grade
Flower Pot

Rotomolded Flower Pot

Large decorative and durable plastic pots for landscaping and urban gardening.

  • Big: Ø60cm × 90cm H
  • Small: Ø66cm × 61cm H
  • Weather & UV resistant
Rotomolded Cases

Rotomolded Cases

Durable, waterproof cases for equipment, tools, and sensitive instruments.

  • Impact-resistant construction
  • Customizable interior
  • Sealed for protection
Agricultural Machine Parts

Agricultural Machine Parts

Custom rotomolded components for tractors, sprayers, and farm equipment.

  • Chemical resistant
  • Durable in harsh environments
  • Lightweight yet strong
Drone Components

Drone & Cooler Components

Specialized hollow parts for drones, coolers, and consumer electronics.

  • Lightweight structural parts
  • Thermal insulation options
  • Custom shapes and colors
Custom Rotomolded Products

Custom Rotomolded Products

From concept to production — we create any hollow plastic product you envision.

  • Prototype to mass production
  • Color matching available
  • Low tooling cost

Our Capabilities

CNC Machining

Precision milling and turning for mold fabrication with tight tolerances.

Rotomolding

Advanced rotational molding technology for hollow, seamless plastic parts.

Design & Engineering

Full-cycle design support from sketches to production-ready models.

Integration

Metal inserts, foaming, and combination with injection-molded parts.

Frequently Asked Questions

What is rotational molding?

Rotational molding (rotomolding) is a process used to create hollow plastic parts by heating a mold filled with plastic powder while rotating it on multiple axes. This ensures even wall thickness and seamless construction.

What materials do you use?

We primarily use linear low-density polyethylene (LLDPE), but also work with HDPE, PP, and other engineering plastics based on application requirements.

Can you make custom molds from my design?

Yes. We accept customer drawings, 3D models, or even rough sketches to develop custom molds tailored to your product.

What industries do you serve?

We serve marine, agriculture, industrial equipment, consumer goods, landscaping, and transportation sectors.

Do you offer prototyping?

Yes. We provide rapid prototyping services to validate designs before full-scale production.

Get in Touch

Have a project in mind? Reach out for a free quote or technical consultation.

Email: [email protected]

Phone / WhatsApp: +86-136-2674-2734

Location: Yuyao, Ningbo, Zhejiang, China

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