China Plastic Injection Molding Factory
These facilities specialize in shaping polymers into precise parts using high-tech molding techniques. They provide consistent production, tailored designs, and reliable outputs for industries ranging from electronics to household goods.
- Innovative Tooling – Custom mold development for unique designs.
- Flexible Scheduling – Adjusts production to meet varying order volumes.
- Energy Efficiency – Uses processes that minimize power consumption.
- Global Logistics Support – Ensures smooth shipment to international markets.
- Technical Consultation – Provides guidance on material selection and process optimization.
OEM Plastic Injection Molding Supplier
These providers craft tailored polymer solutions for diverse industries, transforming raw materials into precise, repeatable components. Their services support efficient manufacturing workflows and help brands achieve consistent product performance.
- Streamlined Workflow – Accelerates product development and reduces turnaround times.
- Design Adaptability – Accommodates complex shapes and unconventional geometries.
- Consistency Across Runs – Ensures identical outcomes for every production batch.
- Resource Efficiency – Minimizes material waste and optimizes manufacturing processes.
- Scalable Solutions – Supports gradual increase from trial runs to full-scale production.
Custom Injection Molded Plastic Parts Manufacturer
These polymer components are crafted to meet unique design criteria, emphasizing accuracy and uniformity. The images display clean, precise shapes that reflect high-quality manufacturing and functional reliability across diverse industries.
- Rapid Prototyping – Accelerates initial design testing and evaluation.
- Enhanced Workflow – Streamlines production planning and assembly readiness.
- Precision Replication – Accurately duplicates intricate design patterns.
- Adaptable Tooling – Supports modifications without full redesigns.
- Optimized Resource Use – Reduces material waste and improves efficiency.
High Precision Structural Plastic Parts
These polymer components provide exact-fit support and stability in assemblies requiring intricate configurations. They deliver consistent performance, dimensional reliability, and resilience across advanced engineering applications.
- Assembly Efficiency – Simplifies alignment and reduces setup errors.
- Load Distribution – Supports even stress across connected elements.
- Compact Integration – Fits tightly in confined spaces without modification.
- Operational Smoothness – Minimizes friction or interference in moving parts.
- Inspection-Friendly – Easier to monitor and adjust without disassembly.
Heat Resistant Injection Molded Parts
These molded polymers are designed to function under extreme thermal conditions without deformation. They provide stable support, protect delicate assemblies, and enable high-performance operation in heat-intensive environments.
- Rapid Assembly Support – Simplifies integration into complex systems.
- Thermal Cycle Endurance – Maintains integrity through repeated heating and cooling.
- Compact Footprint – Conserves space within mechanical or electronic assemblies.
- Noise Dampening – Reduces vibration-induced sound in high-temperature equipment.
- Inspection Accessibility – Facilitates visual checks and component replacements.
Flame Retardant Plastic Components
These polymer elements are crafted to limit heat propagation and protect equipment from hazardous ignition. They ensure safe operation, structural consistency, and dependable performance in demanding electrical and industrial environments.
- Quick Installation – Facilitates fast assembly without specialized tools.
- Operational Consistency – Maintains dependable functionality under fluctuating conditions.
- Compact Arrangement – Saves space within complex assemblies.
- Vibration Absorption – Reduces impact from mechanical motion or shocks.
- Inspection Ease – Supports straightforward visual monitoring and adjustments.
High Strength Engineering Plastic Parts
These polymer components are crafted to support demanding mechanical tasks while resisting deformation and chemical exposure. They offer reliable performance, structural integrity, and precision for advanced industrial and technical applications.
- Effortless Integration – Simplifies fitting into complex assemblies.
- Consistent Operation – Maintains performance under continuous use.
- Compact Footprint – Reduces space requirements in machinery layouts.
- Noise Minimization – Limits vibration and operational sound.
- Inspection Accessibility – Facilitates rapid monitoring and adjustments.
Lightweight Plastic Structural Parts
These polymer components serve as integral frameworks for mechanical assemblies. They provide reliable support, minimize overall mass, and facilitate efficient integration across industrial, transport, and automated systems.
- Streamlined Fabrication – Simplifies assembly processes for complex structures.
- Energy Efficiency – Reduces operational power demands by lowering structural mass.
- Optimized Spatial Design – Fits into compact layouts without compromising stability.
- Shock Absorption – Mitigates vibrations from machinery or movement.
- Inspection Accessibility – Facilitates rapid visual checks and modifications.
Aerospace Plastic Components
These polymer elements serve as precision supports and protective structures in flight and space equipment. They enable efficient load distribution, minimize system stress, and ensure consistent performance under extreme environmental conditions.
- Enhanced Modularity – Supports interchangeable assemblies and easy reconfiguration.
- Energy Efficiency – Reduces power consumption in actuation and control systems.
- Aerodynamic Optimization – Contributes to smoother airflow by minimizing protrusions.
- Noise Reduction – Dampens mechanical vibrations, lowering operational sound.
- Rapid Prototyping Compatibility – Allows fast testing and iteration of new designs.
Plastic Parts for Energy Storage Systems
These polymer components provide containment and support for energy modules, ensuring secure positioning, minimal mechanical interference, and stable performance across industrial and commercial installations.
- Streamlined Connectivity – Facilitates organized routing of modules and linkages.
- Mechanical Buffering – Absorbs stress from assembly movement or operational shifts.
- Installation Simplicity – Reduces complexity when integrating multiple energy units.
- Compact Arrangement – Allows tighter packing without compromising accessibility.
- Operational Visibility – Supports easy inspection and monitoring of system components.
Solar Equipment Plastic Parts
- Durability: Designed to endure prolonged environmental exposure without structural compromise.
- Light Construction: Helps lower overall system load for easier handling and installation.
- Weather Resistance: Maintains function under rain, wind, and temperature changes.
- Precision Fit: Engineered for accurate alignment with surrounding assemblies.
- Maintenance-Free: Requires minimal upkeep throughout its service life
Power Distribution Plastic Components
- Simplified Assembly – Reduces labor effort and streamlines installation.
- Consistent Performance – Maintains uniform behavior under varying loads.
- Optimized Footprint – Occupies minimal space within equipment layouts.
- Vibration Reduction – Absorbs operational shocks, improving system longevity.
- Inspection-Friendly Design – Allows quick visual checks and easy adjustments.
Plastic Cable Management Components
- Streamlined Installation – Simplifies assembly and reduces setup time.
- Enhanced System Reliability – Supports consistent operation of wiring networks.
- Space Optimization – Keeps cables organized without occupying excess area.
- Vibration Dampening – Reduces stress caused by mechanical movement.
- Maintenance Friendly – Facilitates easy inspection and quick adjustments.
Circuit Breaker Plastic Parts
- Electrical Isolation: Reduces risk of short circuits or shocks.
- Durable Performance: Maintains function under repeated operation.
- Precision Alignment: Ensures internal contacts remain properly positioned.
- Impact Resistant: Protects internal mechanisms from mechanical stress.
- Lightweight and Cost-Effective: Easy to handle and economical for large-scale production.
Plastic Connector Housing
- Contact Security: Keeps pins and sockets aligned reliably.
- Electrical Insulation: Reduces risk of short circuits.
- Impact Protection: Shields connectors from shocks or drops.
- Lightweight Build: Easy to integrate into devices.
- Customizable Design: Supports tailored shapes, sizes, and mounts.
Plastic Switch Housing
- Electrical Insulation: Reduces risk of short circuits or shocks.
- Lightweight Design: Easy to handle and integrate into devices.
- Impact Resistance: Protects internal components from damage.
- Precision Fit: Ensures secure alignment with switch mechanisms.
- Customizable Options: Supports tailored sizes, shapes, and mounting features.
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:
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ABS, PC, PP, PA, POM, PE, PMMA, TPU, TPE, and more
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High-performance resins for medical and automotive applications
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Flame-retardant, glass-filled, or UV-resistant compounds
Applications:
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Automotive dashboards, connectors, and housings
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Consumer electronics casings and internal components
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Medical device enclosures and disposables
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Industrial sensor housings and machine parts
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Household and kitchen appliance parts
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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:
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CMM (Coordinate Measuring Machine) dimensional inspection
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First Article Inspection Reports (FAIR)
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Sample Approval Process (T0–T3)
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Material and hardness verification
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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:
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Cavity number: single-cavity, multi-cavity, family mold
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Runner system: hot runner, cold runner, semi-hot
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Mold base type: standardized or fully custom
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Surface finish: mirror polish, textured, matte, or custom engraving
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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:
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Automotive (interior/exterior trim, lighting, fluid management)
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Medical Devices (diagnostic tools, single-use parts, enclosures)
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Consumer Electronics (housings, connectors, thermal management)
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Industrial Equipment (sensor housings, mounting systems)
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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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