High-Performance Injection Molding Manufacturer Products – Taiwan Exporter

Plastic Mould Steel Material

Injection Molding Design
Selecting the right mold steel type is essential for achieving optimal results in plastic injection molding. It influences not only product durability and precision, but also overall manufacturing cost and efficiency. Choosing the right steel at the mold development stage helps ensure a successful and scalable production process.
At Sung I Industrial, we offer complete technical consulting and custom manufacturing solutions—from design and steel selection to tooling and delivery—to support fully integrated vertical production. Whether you're working on large-scale OEM/ODM projects or high-performance transparent components, we can help you select the most suitable steel material for your needs.

More detailed note:

P20 – Ideal for High-Speed Production of Small to Medium Parts
P20 is best for producing small to middle size products, especially where high-speed production is required. It offers an excellent balance of hardness and machinability.
P20+Ni – Optimal for Large Mold Applications with Smooth Finish
When working with large mold applications such as bumpers, dashboards, and TV cabinets, P20+Ni is an excellent choice. It delivers a smooth and shiny surface, meeting the aesthetic demands of larger consumer products.
NAK80 – Premium Choice for Transparent Plastic Components
NAK80 is specially designed for transparent plastic components including camera lenses, tail light covers, and LED lenses. It offers high polish ability, resulting in high brightness and strength—perfect for parts requiring both clarity and durability.

Plastic Injection External Thread Mold

Product Description:
Automated Mold Design / External Thread Plastic Injection Mold
External thread plastic injection molds are specifically designed for products with outer threads, such as bottle caps, container lids, and threaded sleeves. These molds require precise engineering to ensure that thread profiles remain intact during demolding and that product dimensions remain consistent.

With expertise in mold development and advanced plastic injection molding, various thread types and custom specifications can be supported. These molds are widely used in everyday consumer goods, medical components, and other industrial applications.

At Sung I Industrial, we offer full custom manufacturing and OEM/ODM services, supported by a vertically integrated production process. This allows us to improve manufacturing efficiency, maintain high quality, and provide cost-effective solutions for threaded plastic parts—making us your ideal partner in thread mold production.

Plastic Injection Internal Thread Mold

Product Description:
Automated Mold Design / Auto Unscrewing Mold
An auto unscrewing mold is a specialized design where the threaded core rotates automatically to release the plastic part during demolding. This system is ideal for products with external threads and significantly improves production efficiency and stability, making it well-suited for automated plastic injection molding lines.
This technology is widely used in industries that require high-precision and high-speed production. Whether applied in mold development, OEM/ODM manufacturing, or flexible, custom manufacturing projects, auto unscrewing molds play a vital role in optimizing productivity. When integrated into a vertically integrated production process, it allows for streamlined operations, reduced labor, and consistent product quality—making it an essential tool in modern injection molding strategies.

Plastic Injection Mold with Hydraulic Core Pull

Product Description:
Automated Mold Design / Hydraulic Core Pulling Injection Mold
Hydraulic core pulling injection molds are ideal for plastic parts with undercuts, grooves, or side holes that cannot be ejected by standard means. Using a hydraulic cylinder, the mold activates a core-pulling mechanism to ensure smooth and accurate demolding. This technology is widely used in plastic injection molding for automotive, electronics, and industrial products.

At Sung I Industrial, we offer advanced mold development and custom manufacturing solutions. Whether for OEM/ODM projects or high-precision parts, our molds support complex processes such as insert molding and overmolding, and are compatible with various engineering plastics. Through full vertical integration, we manage everything from design to delivery—ensuring faster lead times, stable quality, and cost control. Hydraulic core pulling molds are essential for manufacturers seeking efficiency, durability, and flexibility in modern injection molding production.

Foot Pad Insert Molding

Product Specifications: Threaded Screw + ABS

Product Description:
Leveling Feet / Adjustable Glides
Leveling foot products are widely used in furniture, machinery, and industrial equipment. By using metal insert molding, the threaded screw and ABS plastic base are formed together in a single step, enhancing structural strength and production efficiency while reducing the risk of loosening from manual assembly.

The materials offer high impact resistance, excellent chemical resistance, and strong paint compatibility, making them both functional and visually adaptable.
At Sung I Industrial, we specialize in plastic injection molding and mold development, providing complete custom manufacturing and OEM/ODM services. With our vertically integrated production process, we deliver high-quality, durable, and reliable leveling foot solutions tailored to your application needs.

Auto Parts

Product Specifications: Nut+PP/PA6

Product Description:
Car Parts
For automotive plastic components that require superior strength and durability, insert molding is a highly effective solution. This process allows metal nuts to be molded directly into plastic parts in a single step, improving structural integrity and eliminating the need for manual assembly.

It is especially suitable for load-bearing or vibration-sensitive applications such as interior trim and electrical connectors. By using materials with excellent humidity resistance, chemical resistance, impact strength, and abrasion performance, we ensure long-lasting performance in demanding automotive environments. The materials also provide strong heat resistance, electrical insulation, and oil resistance.

At Sung I Industrial, we specialize in plastic injection molding and mold development, offering flexible custom manufacturing and full-service OEM / ODM production. Our vertically integrated workflow ensures efficiency, precision, and consistent quality for every automotive insert molding solution.

Embedded Injection Molding

Product Specifications: SUS Mesh / PA Mesh / Wire / Ball Chain

Product Description:
Ultra-Thin Insert Molding
At Sung I Industrial, we specialize in insert molding for ultra-thin components, combining advanced plastic injection molding and mold development capabilities. Our process supports embedded parts as thin as 0.05mm, delivering exceptional precision and strength in one seamless production step.

This technology is ideal for incorporating diverse materials such as nylon mesh, nylon fabric, stainless steel Mesh, wiring, and even ball chains directly into molded plastic parts. It ensures strong bonding, reduced assembly time, and improved overall product integrity.

We provide full-service OEM/ODM integration and custom manufacturing tailored to specific industry needs. Backed by a vertically integrated production system, we help clients increase efficiency, lower costs, and achieve superior product performance across automotive, electronics and consumer product markets.

TPR Overmolding

Product Specifications: Aluminum/Die Casting + TPR/TPE

Product Description:
Air/Pneumatic tools Housing / Case (TPR Overmolding)
TPR Overmolding for Enhanced Grip & Shock Absorption Whether using powder-coated or liquid-painted metal housings, TPR (Thermoplastic Rubber) overmolding is an ideal solution to enhance grip comfort and reduce vibration. This improves ergonomic performance and minimizes user hand fatigue.

Unlike manual assembly, TPR overmolding enables high-speed, large-volume production while reducing the risk of slipping, cracking, or detachment. It’s especially suitable for plastic injection molding applications that demand both performance and user comfort.

Key benefits of TPR include:
Excellent abrasion resistance and deformation stability Strong electrical insulation and heat resistance Resistance to grease and harsh chemicals At Sung I Industrial, we specialize in mold development, OEM/ODM, and custom manufacturing. With full vertical integration, we work with advanced engineering plastics and sustainable materials to deliver reliable, production-ready solutions.

TPR Overmolded

Product Specifications: PA+GF+ TPR/TPE/Cork TPE

Product Description:
Air/Pneumatic Tools Housing / Case(TPR Overmolding) / Cork Grip
Sustainable TPE Overmolding with Cork-Based Materials
In response to the growing need for sustainable manufacturing, Sung I Industrial now offers overmolding solutions using TPE blended with natural cork materials. This eco-friendly approach not only reduces the overall weight of the product but also enhances shock absorption, grip comfort, and visual appeal—making it ideal for ergonomic applications.

Unlike traditional rubber or synthetic materials, cork-infused TPE provides a warm tactile feel and a unique surface texture that helps differentiate products in the market. This innovation is especially valuable for brands seeking sustainability without sacrificing durability or functionality.

Through our expertise in plastic injection molding, mold development, and custom manufacturing, we support full OEM/ODM integration. Combined with our vertically integrated production system, we can deliver scalable solutions that use engineering plastics and sustainable materials—helping clients meet modern product demands while aligning with eco-conscious values.

TPR Molding

Product Specifications: Aluminum Magnesium Alloy +PP+TPR/TPE

Product Description:
Air / Pneumatic Tools Handle / Grip
Overmolding Technology｜Enhanced Grip & Brand Identity Through Multi-Material Integration
At Sung I Industrial, we specialize in plastic injection molding and mold development, offering fully custom manufacturing solutions that balance both functionality and aesthetics. Our advanced overmolding technology allows materials like TPR and TPE to be molded directly over metal or plastic substrates, enhancing grip, anti-slip performance, and shock absorption.

Even for metal components with a pre-applied paint or coating finish, Sung I ensures that the overmolding process will not scratch or damage the surface—maintaining a flawless appearance. We can also integrate rigid materials like PP to increase structural strength while offering a dual-layer surface design that adds visual diversity and improves product recognition. This makes it an ideal solution for ergonomically designed products such as hand tools, sporting goods, and automotive components.

With full OEM/ODM support and a vertically integrated workflow, Sung I manages every step from design, material selection, and mold fabrication to injection molding, post-processing, and final packaging—delivering high-quality, scalable overmolding solutions for today’s performance-driven markets.

Two Color Injection Molding

Product Specifications: ABS / PP+TPR / TPE

Product Description:
Bicycle & Tool Handle / Grip (Dual Color Plastic Injection Molding)
Dual color injection molding, also known as two-color overmolding, is a high-efficiency plastic injection molding process that combines two different materials or colors into a single part using one mold and one machine. This process is ideal for products requiring both functional performance and visual appeal—such as bicycle grips, power tool handles, and lifestyle accessories. Dual color molding is ideal for mass production as it helps to reduce cycle time by 25–40%, while maintaining high consistency in product quality.

Compared to traditional assembly methods, this overmolding approach reduces the need for manual labor and secondary processes, minimizing assembly errors and enhancing production efficiency. At Sung I Plastic Inc., we specialize in custom manufacturing and offer one-stop solutions from insert molding to fully integrated OEM / ODM production.

Our experience in developing molds for complex geometries and multi-material combinations allows us to deliver durable, functional, and visually appealing components. Whether you're launching a new consumer product or upgrading an existing line, two-color injection molding offers a cost-effective and scalable solution for industries that value both performance and design.

Engineering Plastic Injection Molding

Product Specifications: PA6+GF / PA66+GF / PA66+GF / PC+ABS / POM / PP / PBT / PMMA / PCR (V0 Fire rating)

Product Description:
Plastic Injection Molding Products
Engineering Plastics & Integrated Injection Molding Solutions
Engineering plastics are widely used across automotive, medical, lighting, and industrial sectors due to their strength, heat resistance, and excellent electrical insulation. At Sung I Industrial, we work with high-performance materials such as PA+GF/CF, POM, PP, TPE/TPU, clear PC, flame-retardant compounds, and recycled plastics. Our capabilities include insert molding and overmolding, ideal for hybrid components combining plastics with metals or textiles.

We support both small-batch prototyping and high-volume production, offering single-color and dual-color injection molding, mold texturing, logo engraving, and finishing options to enhance product design and functionality. To help our clients meet international standards, we also provide certification support with documentation including RoHS, REACH, CE, FDA, and others upon request—tailored to product attributes and end-use environments.

With decades of experience in plastic injection molding, mold development, and OEM/ODM projects, Sung I offers a fully vertically integrated workflow from product design to final delivery—ensuring consistent quality, cost-efficiency, and on-time production tailored to your needs.

TPE Plastic Injection Molding

Product Specifications: TPR / TPV / TPU / TPEE

Product Description:
TPE Plastic Injection Molding Products
TPE Thermoplastic Elastomer Injection Molding – Flexible and Efficient Rubber Alternative
Thermoplastic Elastomers (TPE) combine the elasticity of rubber with the efficient process ability of plastics. Unlike traditional rubber molding, TPE injection molding features shorter cycle times and allows for runner material recycling, making it an ideal solution for cost-effective, high-volume production. This process enhances manufacturing efficiency without compromising performance or quality.

TPE plastic injection molding is widely used in applications that require soft-touch and flexibility, such as tool grips, protective covers, medical components, automotive parts, and anti-slip mats. Its excellent impact resistance and skin-friendly texture make it a popular choice for ergonomic and user-interactive designs. At Sung I, we specialize in custom injection molding services and product development for various industries. Our team works closely with clients from concept to production, offering solutions that include material selection, mold design, and surface treatment. We also support sustainable manufacturing with eco-friendly materials, and can provide documentation for RoHS, REACH, FDA, and CE compliance upon request.

With decades of experience in plastic injection molding, Sung I delivers integrated solutions tailored to your product's unique specifications. Whether you're producing small batches or scaling up to mass production, TPE injection molding offers durability, flexibility, and aesthetic versatility for a wide range of industries.

Processing and Assembly Services

Product Specifications: Screen Print / Water Transfer Printing / Paint / Electroplating / PVD (Vacuum Metalizing)

Product Description:
Print & Paint & Assembly
Surface Finishing: A Value-Boosting Process in Plastic Injection Molding
In today’s competitive market, surface finishing has become an essential value-added step in the plastic injection molding process. To enhance product appearance and reinforce brand identity, many customers choose various post-processing techniques for their custom plastic parts.

Popular options include spray painting, powder coating, water and vacuum electroplating, laser engraving, silk-screen printing, and logo inlay coloring. These finishing methods not only improve aesthetics but also provide added functionality—such as scratch resistance, anti-fingerprint properties, conductivity, and UV protection.

Why Surface Finishing Matters:
1. Elevates product quality and market competitiveness
2. Reinforces brand recognition and visual appeal
3. Expands product utility and application scenarios

Different plastic materials (like ABS, PC, PA, PP) are compatible with specialized finishes, including:
- Industrial-grade wear-resistant coatings (for heat and oil resistance)
- Matte textures (for handheld comfort)
- High-gloss metallic or leather-like coatings (ideal for product housings)

Sung I offers complete OEM/ODM solutions, combining dual-color molding, insert molding, and even 3D printing support—providing integrated surface treatment services to help your products stand out.