Micro Injection Molding for Small Plastic Parts
Micro injection molding produces miniature polymer components with exceptional accuracy. This technique enables intricate designs, consistent output, and high reliability for applications requiring small, finely detailed parts.
- Rapid Turnaround – Accelerates production cycles for tiny components.
- Enhanced Fit – Ensures parts integrate seamlessly with assemblies.
- Surface Consistency – Achieves smooth finishes without additional treatment.
- Reduced Defects – Minimizes imperfections common in traditional molding.
- Scalable Output – Easily adapts to varying production volumes.
Large Size Plastic Injection Molding Service
This service specializes in producing oversized polymer components with precision and uniformity. It supports complex designs, thick structures, and high-volume manufacturing for industrial, automotive, and commercial applications.
- Rapid Turnaround – Accelerates delivery for large-scale projects.
- Reduced Waste – Optimized process minimizes material loss.
- Complex Geometry Handling – Can produce intricate, unconventional shapes.
- Enhanced Surface Finish – Provides smooth, consistent exterior quality.
- Scalable Production – Easily adapts to both small batches and high-volume runs.
Thin Wall Plastic Injection Molding for Electronics
This process creates precise, lightweight polymer components with ultra-slim profiles. It enables efficient production of detailed parts for electronic devices while maintaining structural stability and high repeatability.
- Optimized Flow Control – Ensures molten plastic reaches all areas without defects.
- Reduced Cycle Time – Speeds up production while maintaining part integrity.
- Enhanced Surface Finish – Delivers smooth, defect-free external surfaces.
- Light-Weight Integration – Supports assembly of delicate electronic structures.
- Complex Feature Incorporation – Allows built-in channels, clips, or hinges.
PA66 Automotive Connector Molding
PA66 automotive connector molding produces polymer parts that link vehicle electrical circuits securely. These engineered components offer stability, resist harsh conditions, and ensure consistent performance in diverse automotive systems.
- Rapid Production – Enables high-volume manufacturing with consistent quality.
- Design Versatility – Can be shaped into complex geometries for various connector types.
- Dimensional Precision – Guarantees uniformity for seamless assembly.
- Long-Term Reliability – Maintains structural integrity over extended service periods.
- Assembly Efficiency – Simplifies integration into vehicle electrical systems.
PC Plastic Housing Injection Molding
This process creates polycarbonate enclosures by shaping molten material within molds, producing precise and durable casings. It supports complex configurations, offers stability under stress, and ensures long-lasting performance for electronic and mechanical assemblies.
- Streamlined Production – Enables fast and efficient fabrication cycles.
- Consistent Quality – Maintains uniformity across multiple units.
- Lightweight Design – Reduces overall assembly weight without sacrificing integrity.
- Custom Feature Integration – Allows incorporation of functional elements directly in the mold.
- Minimal Material Waste – Optimizes polymer usage and reduces scrap.
Nylon Injection Molded Mechanical Components
These components are precision polymer pieces shaped through injection molding to support moving assemblies. They offer high durability, smooth operation, and stability under repetitive mechanical forces in various equipment and devices.
- Simplified Assembly – Designed for quick and straightforward integration.
- Noise Reduction – Minimizes operational sounds in mechanical systems.
- Energy Efficiency – Reduces friction, supporting smoother motion with less power.
- Flexible Adaptation – Compatible with varied mechanical designs and layouts.
- Consistent Output – Maintains uniform performance across multiple units.
Custom ABS Injection Molded Parts
These components are crafted from ABS polymers to match specialized requirements. They deliver consistent shape, reliable performance, and robustness for applications across electronics, automotive, and industrial sectors.
- Rapid Production – Enables fast turnaround for prototype or batch runs.
- Consistent Surface Quality – Smooth finish suitable for aesthetic or functional use.
- Adaptable Mold Designs – Can incorporate intricate textures or integrated features.
- Minimal Post-Processing – Reduces additional machining or finishing steps.
- Optimized Material Usage – Efficiently uses ABS to lower waste and costs.
Plastic Injection Molding Company for Electronics
These firms craft polymer components specifically for electronic applications. They deliver tailored solutions, maintain tight tolerances, and support reliable performance for a variety of devices and systems.
- Rapid Turnaround – Accelerates component delivery for faster product launches.
- Design Adaptability – Supports iterative modifications during development.
- Precision Replication – Produces identical parts across multiple production runs.
- Waste Reduction – Optimized processes minimize material loss.
- Process Scalability – Easily transitions from prototypes to high-volume manufacturing.
Contract Plastic Manufacturing Service
This service offers professional production of polymer components for clients, providing specialized processes, technical expertise, and reliable delivery. It allows businesses to obtain high-quality parts without maintaining their own production infrastructure.
- Resource Optimization – Reduces internal workload and frees up staff for core tasks.
- Rapid Prototyping – Speeds up trial runs and early-stage product development.
- Process Reliability – Ensures consistent output through standardized workflows.
- Adaptable Production – Easily accommodates design changes or seasonal demands.
- Supply Chain Support – Facilitates smooth logistics and timely part delivery.
Precision Plastic Components Manufacturer
These manufacturers produce highly detailed polymer items with strict adherence to specifications. They deliver consistent performance, intricate designs, and dependable results for specialized industrial, medical, and electronic applications.
- Optimized Workflow – Streamlines production processes for faster turnaround.
- Adaptive Engineering – Capable of adjusting techniques for novel designs.
- Enhanced Surface Quality – Achieves smooth finishes and fine details.
- Scalable Output – Easily supports small and large production runs.
- Regulatory Compliance – Meets industry standards for safety and reliability.
High Volume Injection Molding Manufacturer
These manufacturers produce polymer components in bulk using advanced molding technology. They specialize in rapid output, uniform quality, and scalable production for industries requiring large-scale, reliable parts.
- Rapid Turnaround – Capable of delivering projects within tight timelines.
- Production Scalability – Easily adjusts output to match changing demand levels.
- Process Consistency – Ensures uniform performance across entire production runs.
- Technical Expertise – Skilled in designing complex molds for intricate parts.
- Resource Efficiency – Optimizes energy and material usage to reduce operational costs.
Injection Molded Parts Supplier for Automotive
Automotive injection molded parts providers create precision polymer components tailored for vehicle systems. They deliver reliable performance, consistent shapes, and robust materials to support both standard assemblies and specialized automotive applications.
- Accelerated Assembly – Simplifies integration into complex vehicle modules.
- Consistent Output – Maintains uniformity across large production runs.
- Environmental Resistance – Withstands exposure to vibration, moisture.
- Reduced Downtime – Minimizes maintenance interruptions during vehicle operation.
- Adaptable Production – Supports adjustments for emerging automotive technologies.
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.
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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