Mass Production Plastic Molding
Mass production plastic molding provides efficient and reliable solutions for large-scale plastic component manufacturing. It supports consistent quality, flexible materials, and optimized production for automotive, electronics, industrial, and consumer applications.
- Material Options：ABS, PP, PC, PA, POM, TPU, and other engineering plastics.
- Mold Types：Multi-cavity molds, family molds, hot runner molds, and production tooling.
- Production Capability：High-volume manufacturing, continuous production, and automated molding.
- Part Capability：Housings, covers, panels, connectors, brackets, and functional components.
- Surface Finish：Texture, painting, coating, printing, and assembly.
- Quality Control：Material verification, dimensional inspection, process monitoring, and validation.
Soft Tooling Injection Molding
Soft tooling injection molding provides a fast and cost-effective solution for prototype validation, functional testing, and low-volume plastic production. It supports production-grade materials, flexible designs, and efficient product development.
- Tooling Materials:Aluminum, P20 steel, pre-hardened steel, and customized tooling materials.
- Plastic Materials:ABS, PC, PP, PA, TPU, POM, and other engineering plastics.
- Mold Types:Prototype molds, single-cavity molds, multi-cavity molds, and insert molds.
- Production Capability:Prototype parts, bridge production, and low-volume manufacturing.
- Surface Finish:Texture, polishing, painting, coating, printing, and assembly.
- Application Support:Automotive, electronics, medical, industrial, and consumer products.
PET Injection Molding
PET injection molding provides lightweight and durable plastic components with stable dimensions, chemical resistance, and efficient production capability. It supports packaging, consumer, industrial, and functional applications requiring consistent quality.
- Material Options:Standard PET, reinforced PET, transparent PET, and modified PET materials.
- Molding Process:Injection molding with optimized temperature, pressure, and cooling control.
- Part Capability:Containers, housings, covers, functional components, and customized structures.
- Design Capability:Thin walls, complex geometries, detailed features, and integrated structures.
- Surface Finish:Smooth finish, coating, printing, and customized surface treatments.
- Production Volume:Prototype, small batch, and high-volume manufacturing.
PEEK CNC Machining
PEEK CNC machining provides lightweight and high-performance plastic components with excellent temperature resistance, chemical stability, and precision capability. It supports demanding applications requiring reliable performance and tight dimensional control.
- Material Options：Virgin PEEK, carbon fiber reinforced PEEK, glass fiber reinforced PEEK, and PTFE filled PEEK.
- Machining Processes：CNC milling, CNC turning, multi-axis machining, and precision finishing.
- Part Capability：Bushings, seals, insulators, fixtures, housings, and customized components.
- Performance Features：High temperature resistance, chemical resistance, wear resistance, and low friction.
- Surface Finish：Deburring, polishing, grinding, and precision surface preparation.
- Production Volume：Prototype, low-volume production, and customized manufacturing.
Industrial CNC Machining
Industrial CNC machining provides precision components with reliable performance, flexible materials, and scalable manufacturing capability. It supports machinery, automation, energy, and industrial equipment applications requiring accuracy and durability.
- Machining Capability：CNC milling, CNC turning, multi-axis machining, and precision machining.
- Material Options：Aluminum, stainless steel, carbon steel, titanium, copper, brass, and engineering plastics.
- Part Capability：Housings, shafts, brackets, fixtures, manifolds, and mechanical components.
- Tolerance Capability：Precision machining based on component requirements and application needs.
- Surface Finish：Anodizing, coating, grinding, polishing, plating, and finishing treatments.
- Production Volume：Prototype, replacement parts, small batch, and production manufacturing.
CMM Inspected CNC Parts
CMM inspected CNC parts combine precision machining with advanced measurement verification to ensure dimensional accuracy, repeatability, and reliable performance. They support industries requiring strict tolerances and documented quality control.
- Machining Capability：3-axis, 4-axis, 5-axis CNC milling, CNC turning, and complex machining.
- Inspection Method：Coordinate Measuring Machine (CMM) inspection and dimensional verification.
- Material Options：Aluminum, stainless steel, titanium, copper, brass, and engineering plastics.
- Inspection Capability：Dimensional measurement, geometric tolerance verification, and inspection reporting.
- Surface Finish：Anodizing, polishing, grinding, coating, plating, and electropolishing.
- Production Volume：Prototype, first article inspection, low-volume production, and mass manufacturing.
High Accuracy CNC Machining
High accuracy CNC machining provides precision components with tight dimensional control, advanced processing capability, and reliable production performance. It supports industries requiring complex geometries, demanding materials, and consistent quality.
- Machining Capability：3-axis, 4-axis, 5-axis CNC milling, turning, and turn-milling.
- Tolerance Capability：Precision machining based on part requirements and application needs.
- Material Options：Aluminum, stainless steel, titanium, copper, brass, and engineering plastics.
- Part Capability：Complex geometries, tight holes, threads, curved surfaces, and precision features.
- Surface Finish：Anodizing, polishing, grinding, coating, plating, and electropolishing.
- Production Volume：Prototype, low-volume production, and volume manufacturing.
Fixture CNC Machining
Fixture CNC machining provides customized positioning and workholding solutions with precision manufacturing, durable materials, and reliable performance. It supports machining, assembly, inspection, and automation applications requiring repeatability and efficiency.
- Material Options：Aluminum, stainless steel, tool steel, carbon steel, and engineering plastics.
- Machining Processes：CNC milling, CNC turning, multi-axis machining, grinding, and finishing.
- Fixture Types：Machining fixtures, inspection fixtures, assembly fixtures, and welding fixtures.
- Design Capability：Custom locating systems, clamps, supports, and modular structures.
- Surface Finish：Anodizing, coating, grinding, polishing, and surface hardening.
- Application Support：Automotive, aerospace, electronics, automation, and medical manufacturing.
Rapid Injection Mold Tooling
Rapid injection mold tooling provides fast and flexible solutions for prototype development, functional testing, and low-volume plastic production. It supports quick validation with production materials and reduced tooling investment.
- Tooling Materials：Aluminum, P20 steel, hardened steel, and customized tooling materials.
- Molding Materials：ABS, PC, PP, PA, TPU, POM, and engineering plastics.
- Tool Capability：Prototype molds, bridge tooling, single-cavity, and multi-cavity molds.
- Production Volume：Prototype parts, low-volume production, and pre-production runs.
- Manufacturing Process：CNC machining, EDM, injection molding, and inspection.
- Application Support：Automotive, electronics, medical, industrial, and consumer products.
Robotics Injection Molding
Robotics injection molding provides lightweight, precision plastic components with flexible materials and scalable production capability. It supports robotic systems requiring accurate assembly, durability, and efficient manufacturing.
- Material Options：ABS, PC/ABS, PA, POM, TPU, and other engineering plastics.
- Molding Process：Injection molding, insert molding, and overmolding.
- Part Capability：Housings, covers, brackets, structural parts, and functional components.
- Design Features：Thin walls, ribs, mounting structures, clips, and integrated features.
- Surface Finish：Texture, painting, coating, polishing, and custom finishes.
- Production Volume：Prototype, low-volume production, and high-volume manufacturing.
LED Lighting Die Casting
LED lighting die casting provides lightweight aluminum components with excellent thermal performance, structural stability, and scalable production capability. It supports heat sinks, housings, frames, and customized lighting structures.
- Material Options：ADC12, A380, AlSi10MnMg, and customized aluminum alloys.
- Casting Process：High-pressure die casting with CNC secondary machining options.
- Component Capability：Heat sinks, housings, frames, brackets, and structural parts.
- Thermal Performance：Optimized designs for efficient heat dissipation and LED reliability.
- Surface Finish：Powder coating, anodizing, sand blasting, and CNC finishing.
- Production Volume：Prototype, low-volume production, and high-volume manufacturing.
Plastic Connector Molding
Plastic connector molding provides precision plastic components with excellent insulation performance, dimensional stability, and scalable production capability. It supports electrical, automotive, industrial, and communication applications requiring reliable connector performance.
- Material Options：PA, PBT, PC, ABS, LCP, and other engineering plastics.
- Molding Process：Injection molding, insert molding, and precision multi-cavity molding.
- Part Capability：Connector housings, terminal holders, locking structures, and insulation components.
- Feature Capability：Thin walls, fine structures, clips, ribs, and precision interfaces.
- Secondary Operations：Assembly, laser marking, printing, and trimming.
- Production Volume：Prototype, small batch, and high-volume manufacturing.
Electric Vehicle Die Casting
Electric vehicle die casting provides lightweight aluminum components with high integration, precision performance, and scalable manufacturing capability. It supports battery, structural, motor, and thermal management applications.
- Material Options：A380, ADC12, AlSi10MnMg, and customized aluminum alloys.
- Casting Process：High-pressure die casting, large-scale casting, and secondary machining.
- Component Capability：Battery housings, structural parts, motor housings, and integrated components.
- Machining Capability：CNC machining for mounting surfaces, holes, and precision areas.
- Surface Treatment：Powder coating, shot blasting, anodizing, and painting.
- Production Volume：Prototype validation, pilot production, and automotive mass manufacturing.
Custom Aluminum Die Cast Parts
Custom aluminum die cast parts provide lightweight metal components with excellent strength, dimensional stability, and efficient production capability. They support complex designs and high-volume manufacturing for automotive, industrial, and electronics applications.
- Material Options：ADC12, A380, A356, and customized aluminum alloys.
- Casting Process：High-pressure die casting, insert casting, and secondary machining.
- Part Capability：Thin walls, ribs, cavities, housings, brackets, and complex structures.
- Surface Finish：Powder coating, anodizing, polishing, machining, and painting.
- Production Volume：Prototype, low-volume production, and high-volume manufacturing.
- Quality Control：Material testing, dimensional inspection, and production validation.
Automotive Plastic Injection Parts
Automotive plastic injection parts provide lightweight, precision components with flexible material options and scalable production capabilities. They support interior, exterior, and functional vehicle applications requiring consistent quality and reliable performance.
- Material Options：ABS, PC/ABS, PP, PA, TPE, TPU, and automotive-grade engineering plastics.
- Part Capability：Panels, housings, clips, brackets, covers, ducts, and integrated components.
- Molding Process：Injection molding, insert molding, and overmolding.
- Surface Finish：Texture, painting, coating, printing, and decorative finishes.
- Production Volume：Prototype, low-volume production, and high-volume manufacturing.
- Quality Control：Material testing, dimensional inspection, and production validation.
Custom Injection Molding Service
Custom injection molding service provides precision plastic components with flexible materials, complex designs, and scalable production capabilities. It supports industries requiring consistent quality, efficient manufacturing, and customized solutions.
- Material Options：ABS, PC, PP, PA, TPU, POM, and other engineering plastics.
- Mold Types：Single cavity, multi-cavity, family mold, and insert mold.
- Part Capability：Thin walls, ribs, bosses, snap fits, undercuts, and complex geometries.
- Surface Finish：Texture, polishing, painting, printing, and coating.
- Production Volume：Prototype, small batch, and high-volume manufacturing.
- Quality Control：Material verification, dimensional inspection, and production validation.
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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