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Lightweight electrical enclosures

Electrical Plastic Enclosures

Electrical plastic enclosures are polymer housings designed to protect wiring and devices, offering durability, insulation, and safe operation in various settings.
  • Insulated Protection: Prevents electrical shocks and short circuits.
  • Moisture Resistant: Safeguards equipment in damp environments.
  • Lightweight Handling: Easy to transport and install.
  • Durable Material: Resists impact and environmental wear.
  • Customizable Design: Supports different shapes, sizes, and mounting options.
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Custom polymer parts

Plastic Mechanical Parts Manufacturing

Plastic mechanical parts manufacturing produces polymer components engineered for strength, precision, and long-term performance in machinery and industrial equipment.
  • Precision Fit: Ensures accurate alignment in assemblies.
  • Durable Construction: Maintains performance under repeated stress.
  • Low Weight: Reduces mechanical load and energy consumption.
  • Chemical Resistant: Performs reliably in harsh industrial environments.
  • Design Flexibility: Supports complex shapes and custom geometries.
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Wear resistant polymer parts

Heavy Duty Plastic Components

Heavy duty plastic components are engineered polymer parts built for strength and resilience. They offer reliable performance in tough industrial and mechanical applications.
  • Impact-Resistant: Withstands shocks, drops, and sudden forces.
  • High Load Capacity: Supports heavy machinery and structural applications.
  • Wear-Resistant: Maintains performance under friction and repetitive use.
  • Lightweight Strength: Provides durability without adding excessive weight.
  • Customizable Design: Can be tailored to specific industrial requirements.
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Precision plastic components

Custom Industrial Plastic Parts

Custom industrial plastic parts are purpose-built polymer components that support machinery and equipment. They offer strength, precision, and adaptability for specialized industrial applications.
  • Tailored Fit: Designed to meet unique industrial specifications.
  • High Durability: Resists mechanical stress and chemical exposure.
  • Lightweight Design: Reduces system load and improves efficiency.
  • Precision Engineering: Ensures consistent performance and alignment.
  • Flexible Fabrication: Supports complex shapes and custom geometries.
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Plastic Valve Components

Plastic valve components are engineered polymer parts that guide and regulate fluid movement. They are sturdy, lightweight, and built for precise and efficient operation across various systems.
  • Corrosion-Free: Resists chemical and environmental damage
  • Lightweight Design: Reduces system load and installation effort.
  • High Precision: Ensures accurate flow control and tight sealing.
  • Durable Performance: Maintains function under repeated use.
  • Customizable Shapes: Supports specialized valve designs.
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Waterproof control panels

Industrial Control Panel Enclosures

Industrial control panel enclosures are robust housings that protect electrical systems. They provide secure storage, organized component placement, and resistance to environmental hazards in industrial settings.
  • Impact Resistance: Protects internal components from accidental knocks or drops.
  • Flexible Mounting: Supports a variety of installation methods for different setups.
  • Thermal Management: Helps dissipate heat to maintain optimal component performance.
  • Corrosion-Free Surface: Resists rust and degradation in humid or chemical environments.
  • Scalable Design: Easily expandable or adjustable to accommodate future upgrades.
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Plastic pump casing

Plastic Pump Housing

Plastic pump housings are engineered enclosures that support and protect pump internals. They are lightweight, sturdy, and designed for reliable fluid handling in various systems.
  • Impact Resistance: Withstands accidental bumps and mechanical shocks.
  • Low Maintenance: Requires minimal upkeep over its service life.
  • Rapid Fabrication: Can be produced quickly for large-scale orders.
  • Thermal Tolerance: Maintains form and performance under temperature changes.
  • Compact Profile: Fits easily in tight spaces and complex assemblies.
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Custom plastic gears

Plastic Gears Injection Molding

Plastic gears injection molding produces precise polymer gears used in machinery and devices. These components are strong, lightweight, and crafted for smooth, efficient mechanical operatio
  • Silent Operation: Reduces noise in gear-driven systems.
  • Corrosion-Free: Resistant to moisture and chemicals.
  • Quick Production: Enables fast, high-volume manufacturing.
  • Compact Design: Ideal for tight spaces in devices.
  • Stable Performance: Maintains shape and function over extended use.
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Plastic housings for machinery

Machinery Plastic Parts

Machinery plastic parts are engineered polymer components that provide structural support and protection for industrial equipment. They are lightweight, resilient, and designed for precise integration into mechanical systems.
  • Vibration Absorption: Minimizes operational noise and reduces stress on machinery.
  • Quick Installation: Designed for easy assembly and replacement without extensive downtime.
  • Flexible Design Options: Can be shaped into complex forms for specialized applications.
  • Thermal Stability: Maintains performance under fluctuating temperatures.
  • Surface Smoothness: Reduces friction and improves interaction with moving parts.
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Plastic brackets and mounts

Industrial Plastic Components

Industrial plastic components are molded or machined parts designed for use in manufacturing and machinery. They offer strength, chemical durability, and precise fit while remaining lightweight and cost-efficient.
  • Corrosion Protection: Prevents damage from moisture and industrial chemicals.
  • Noise Reduction: Minimizes sound generated by moving machinery parts.
  • Easy Handling: Lightweight design simplifies installation and maintenance.
  • Flexible Design Options: Can be shaped into complex forms for specialized functions.
  • Energy Efficiency: Reduces friction and operational load, lowering power consumption.
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Plastic sensor covers for wearable devices

Plastic Components for Wearable Devices

Plastic components for wearable electronics are molded parts that provide structural support and protection for internal modules. They are lightweight, durable, and designed to fit comfortably while allowing flexible design options.
  • Sweat Resistance: Withstands exposure to moisture during daily activities.
  • Quick Fabrication: Allows fast, cost-effective production for high-volume devices.
  • Smooth Contours: Ensures comfort and reduces irritation on the skin.
  • Vibrant Finishes: Can be produced in multiple colors and textures for aesthetic appeal.
  • Shape Retention: Maintains form and stability even under frequent flexing or movement.
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Lightweight battery cover

Plastic Battery Cover Molding

Plastic battery cover molding produces protective casings for battery units in devices. These parts are strong, lightweight, and precisely shaped to secure batteries while allowing easy installation and removal.
  • Scratch Protection: Prevents surface marks and maintains appearance.
  • Chemical Resistance: Guards against exposure to cleaning agents or mild chemicals.
  • Quick Assembly: Designed for easy installation and removal.
  • Compact Design: Fits neatly within tight device spaces.
  • Long-Term Stability: Maintains shape and strength over extended use.
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Laptop bezel plastic components

Injection Molded Laptop Components

Injection molded laptop components are crafted plastic parts that form the structure and functional elements of laptops. They provide sturdy support for internal electronics while enabling precise, compact, and sleek designs.
  • Vibration Dampening: Reduces movement and stress on internal electronics.
  • Rapid Production: Allows fast manufacturing to meet high-volume demands.
  • Smooth Finish: Ensures surfaces are easy to clean and handle.
  • Color Customization: Can be produced in a variety of shades for branding or aesthetics.
  • Impact Distribution: Spreads force across the structure to minimize localized damage.
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Lightweight plastic parts for electronics

Plastic Parts for Smart Home Devices

Plastic components for smart home gadgets are molded elements that support device structure and functionality. They are sturdy, lightweight, and designed to protect internal electronics while enabling sleek, compact designs.
  • Shock Absorption: Protects electronics from sudden impacts.
  • Compact Form: Fits into small or tight device spaces.
  • Moisture Resistance: Guards against minor spills and humidity.
  • Light Handling: Easy to install and manipulate during assembly.
  • Long-Lasting Finish: Retains appearance and performance over time.
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Custom remote control casing

Plastic Remote Control Shell

Plastic remote control shells are protective covers made from molded plastic, designed to encase and shield the internal components of remote controls. They provide durability, comfort, and customization options while ensuring the remote remains lightweight and functional.
  • Scratch-Proof: Resists damage from daily use.
  • Compact Design: Easy to store and handle.
  • Heat Resistance: Can withstand high temperatures.
  • Easy to Clean: Smooth surface for quick maintenance.
  • Long-Lasting: Built to endure extended usage.
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Protective enclosures for power units

Power Supply Housing Molding

Power Supply Housing Molding involves creating protective cases for power supply units through molding processes. These enclosures, typically made from sturdy materials, offer protection from external elements and help ensure the safe and reliable operation of electrical systems.
  • Lightweight: Provides protection with minimal weight.
  • Affordable: Low-cost production for large volumes.
  • Customizable: Designed to fit specific units.
  • Versatile: Flexible shapes and finishes.
  • Long-lasting: Built for durability in tough conditions.
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Precision-Engineered Mould Solutions Tailored to Your Needs

The modern manufacturing industry comprises custom plastic injection moulds that allow producing high-quality and repeatable plastic parts in a diverse array of industries. We specialize in designing and production of precision injection moulds at SunOn Industrial Group Limited, specific to your product, application and production level.

SunOn has more than 25 years of experience in the industry and is a reliable OEM/ODM supplier who will provide you with the entire system (concept to finished product) at your idea. These could be either a new product or an optimization of an existing product, our in-house engineers and technicians would see to it that all the moulds are of your specifications as far as functionality, durability and performance is concerned.

Our Custom Mould Capabilities.

SunOn is a single roof company offering the full customization of plastic injection moulds:

  • Product and Mold Design: We work in close consultation with the clients to comprehend the design purpose, functionality and manufacturability.
  • Mold Flow Analysis: We optimize the design of a mold to constitute material flow, cooling, contraction and cycle of time with the help of a simulation software.
  • Tooling & Fabrication: Precision mold components are produced in-house with CNC machining centers, EDM, wire-cutting and grinding.
  • Trials of Injection Molding: We do extensive sampling and trials to make sure that all moulds satisfy the customer expectations before mass production.
  • Revisions & Maintenance: Continuous assistance in mold changes, keeping of the tools and refurbishment lengthens the life of your tooling investment.

Equipment and Facilities

We have a 32, 000-square-meter plant in Dongguan, China that has:

  • 89 injection molding machines (50T-1200T).
  • 17 two color (2K) molding machines (120T-700T).
  • 37 CNC machining centers
  • 46 EDM machines
  • 8 slow wire-cut machines
  • CMM measurement and QC labs

In-house temperature controllers and drying systems of molds.

Our version of this highly developed infrastructure is easy lead times, small tolerances (±0.005mm), and uniform quality of parts in both small pilot and high volume output.

Materials and Applications

Our custom plastic injection moulds support a wide variety of engineering-grade thermoplastics including:

  • ABS, PC, PP, PA, POM, PE, PMMA, TPU, TPE, and more

  • High-performance resins for medical and automotive applications

  • Flame-retardant, glass-filled, or UV-resistant compounds

Applications:

  • Automotive dashboards, connectors, and housings

  • Consumer electronics casings and internal components

  • Medical device enclosures and disposables

  • Industrial sensor housings and machine parts

  • Household and kitchen appliance parts

  • LED lighting fixtures and covers

Quality Assurance and Compliance

Quality is central to everything we do. Every custom plastic injection mould we manufacture is subject to rigorous quality control protocols, including:

  • CMM (Coordinate Measuring Machine) dimensional inspection

  • First Article Inspection Reports (FAIR)

  • Sample Approval Process (T0–T3)

  • Material and hardness verification

  • Full traceability of components and tooling

We are ISO 9001 certified, and our materials and processes comply with RoHS, REACH, and relevant UL standards.

Advantages of Partnering with SunOn

✅ Full In-House Control

All critical steps—from mold design to plastic injection molding—are completed under one roof, giving you consistent quality and accountability.

✅ Speed and Flexibility

With in-house tooling and rapid prototyping, we minimize lead times and can quickly adapt to design changes or production demands.

✅ Cost Efficiency

Our optimized processes and strategic location allow us to offer competitive pricing without compromising quality.

✅ Engineering Support

We provide technical input on DFM (Design for Manufacturability), material selection, and mold optimization to ensure the success of your product.

Customization Options

Every product is different, and so is every mold. Our team will work with you to customize your injection moulds based on:

  • Cavity number: single-cavity, multi-cavity, family mold

  • Runner system: hot runner, cold runner, semi-hot

  • Mold base type: standardized or fully custom

  • Surface finish: mirror polish, textured, matte, or custom engraving

  • Ejector systems: pin ejector, sleeve ejector, stripper plate

We also support overmolding, insert molding, and two-shot molding (2K) based on your part design and material requirements.

Industries We Serve

Our custom plastic injection moulds are trusted by companies in:

  • Automotive (interior/exterior trim, lighting, fluid management)

  • Medical Devices (diagnostic tools, single-use parts, enclosures)

  • Consumer Electronics (housings, connectors, thermal management)

  • Industrial Equipment (sensor housings, mounting systems)

  • Smart Home Products (IoT devices, wearables, smart plugs)

We offer fast, competitive quotes and even free CNC-machined prototypes so you can evaluate fit, function, and finish before production. Whether you’re launching a new product or scaling up production, SunOn Industrial Group is your trusted partner for custom plastic injection moulds. With decades of experience, cutting-edge equipment, and full in-house capabilities, we deliver reliable, efficient, and high-quality tooling solutions to clients worldwide.

Let us bring your plastic components to life—with precision, performance, and partnership.

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