High-quality parts injection molding
We offer precision plastic injection molding services to produce customized parts quickly and accurately.
Shin-Yao is a high-quality plastic injection molding service company you can trust.
Shin-Yao Co., Ltd. focuses on providing reliable and efficient customized injection molding services to meet the needs of high-volume production and complex part design.
Leveraging our advanced injection molding machines, we can offer shorter delivery times and lower unit prices while maintaining quality, precision, and service. With experience, state-of-the-art equipment, and a relentless pursuit of customer satisfaction, we help businesses across various industries realize customized injection-molded products in a precise, stable, and efficient manner.
Understanding Custom Plastic Injection Molding Process
Custom injection molding is a highly efficient manufacturing method capable of producing large quantities of uniform, durable plastic parts with extremely high precision. The injection molding process is renowned for its ability to mass-produce complex plastic parts and is widely used in various industries, including automotive, medical, and consumer goods. With continuous advancements in materials and technology, the future development prospects of injection molding are promising, offering modern manufacturing greater design flexibility, faster production speeds, and more sustainable solutions.
When to choose injection molding？
- You need to mass-produce
- Parts need to have complex shapes or fine details
- Strict tolerances and consistency are essential.
- You produce small to medium-sized parts.
- Long-term cost-effectiveness is the primary consideration.
Plastic injection molding capability
塑膠射出成型能力
| The industry focuses on aerospace, automotive, communications, construction, electrical, electronics, and optics. | |
| Material | ABS、PBT、PP、NY6、NY66、PC、POM、PVC、TPE、TPR、PEEK、PPS、Vectra、PET、ULTEM |
| Product functions: medium-sized parts, micro parts, small parts | |
| Services include insert molding, overmolding, mold making, Kanban management, inventory management, and shipping. | |
| Production volume: | low output, small batch, high output, large scale, sample operation |
| File format： | DWG、JPEG 或 JEPG、PDF、STP |
| Ejection size: | 0.15 grams (minimum) – 135 grams (maximum) |
| Equipment tonnage: | 50 tons (minimum) – 120 tons (maximum) |
| The error (+/-) | is accurate to 0.05 mm. |
At Shin-Yao Co., Ltd., we will assist you in selecting the best approach to meet the design, budgeting, and production needs of complex projects and precision parts.
Advantages of Custom Injection Molding
Custom injection molding offers numerous advantages, making it the preferred manufacturing process for many industries with high product quality requirements. As a plastic mold manufacturing company, we are committed to creating high-precision, scalable, and cost-effective injection molded products for our clients, while ensuring superior quality control.
High production efficiency
Once the mold manufacturing process is complete, injection molding can quickly produce thousands or even millions of identical parts, thereby reducing unit costs and shortening turnaround time.
Accuracy and consistency
Injection molding ensures tolerances and uniformity for all plastic parts, making it ideal for components requiring extremely high precision, such as medical devices or automotive applications.
Mold design flexibility
With the help of custom double-sided molds, manufacturers can produce complex geometries, varying wall thicknesses, and fine features that are difficult to achieve with other product design methods.
Minimize material waste
Injection molding produces almost no excess material, and many of the thermoplastics used are recyclable, making it a more sustainable option for manufacturers focused on reducing waste and increasing efficiency.
Durability and strength
Injection molding is a process used to manufacture plastic parts that can be reinforced with fillers or made from high-performance thermoplastics to meet stringent mechanical, thermal, or chemical performance requirements. With innovative solutions and rigorous quality control, injection molding enables the creation of durable products.
Repeatable and scalable
Whether you need small prototypes, reliable small-batch production, or millions of end-use products, injection molding ensures repeatable production at any scale, thus maintaining product integrity over the long term.
Cost-effective solutions
Injection molding offers excellent cost-effectiveness for mass production. Although the initial investment in molds is high, the unit cost decreases significantly over time. Once the mold is completed, parts can be produced quickly and reliably with minimal waste, making it an ideal choice for achieving long-term cost savings.
Injection molding process of Shin-Yao Co., Ltd.
At Shin-Yao Corporation, we follow a customer-centric total injection molding process, aiming to deliver accurate, efficient, and high-quality results from start to finish.
Consulting and Project Planning
Our process begins with a detailed consultation to understand your product needs, including functionality, material requirements, production scale, and budget. We will help you determine whether injection molding is suitable or whether thermoforming would be a more efficient way to achieve your goals.
Material selection and design assistance
Our engineers will work with you to select the ideal thermoplastic based on your application requirements, balancing strength, flexibility, and cost. Our design team will then create a 3D CAD model to visualize the part before mold making.
Tool manufacturing
Once the prototype is finalized, we will customize the mold for you using high-grade materials suitable for your production scale and part complexity. Our strong relationships with domestic and international injection mold partners enable us to shorten delivery times and control costs.
Material selection and design assistance
我們的工程師將與您合作，根據您的應用需求選擇理想的熱塑性塑料，兼顧強度、柔韌性和成本。之後，我們的設計團隊會建立 3D CAD 模型，以便在開模前可以視覺化零件。
Production and quality control
We have commenced full-scale production using advanced injection molding machines (up to 610 tons). Throughout the production process, we continuously monitor the consistency, precision, and durability of our products, making adjustments as needed to ensure that every part fully meets your standards.
Secondary processing and value-added services
After molding, the parts can undergo secondary processing, such as CNC machining, painting, coating, or assembly. We also provide packaging, warehousing, and logistics solutions to optimize your supply chain.
This point-to-point process ensures that your injection molded parts are delivered on time, on budget, and to specifications every time.
Injection mold manufacturing capability
At Shin-Yao Co., Ltd., our injection molding die manufacturing capabilities are designed to support part designs ranging from simple to highly complex, while minimizing delivery time and improving part quality. Dies are one of the most critical elements in the injection molding process, and our team works closely with leading domestic and international die manufacturers to provide durable, high-precision dies that ensure excellent performance in long-term production.
High-quality mold materials
We offer customized mold solutions using robust and durable materials such as hardened steel, aluminum alloys, and copper alloys, selectable based on your production scale, design complexity, and budget requirements. Whether you’re producing small batches of prototypes or millions of high-performance parts, our molds can meet the needs of single-cavity or multi-cavity designs, enabling rapid and scalable production.
Key features of our mold manufacturing capabilities include：
- Customized molds to ensure part consistency and precision
- Supports complex geometries, chamfers, and varying wall thicknesses.
- Single-cavity and multi-cavity mold options can increase output and reduce costs.
- With multiple trustworthy tool suppliers, turnaround time can be shortened rapidly.
- Tools are maintained and stored for use in ongoing or future production operations.
Conveyor mold solution
Mold transfer services allow you to transfer your existing injection molding dies to a new manufacturer, saving time and costs and increasing production efficiency. At Shin-Yao Co., Ltd., our injection molding experts inspect, test, and adjust the transferred dies to ensure a perfect fit with our equipment and processes.
Choosing the timing of tool transfer：
- Your current supplier is causing production delays.
- You have found that the quality of the parts is inconsistent.
- You need a better price or customer support.
- You want to integrate production under a trusted partner.
Our strategic approach to mold manufacturing ensures that every mold we produce has long-term value—providing high precision, tight tolerances, and high performance throughout the product lifecycle.
The thermoplastics we use
Choosing the right material is crucial for the success of any injection molding project. Our injection molding company collaborates with a wide range of high-performance thermoplastics to ensure your parts meet precise requirements in terms of durability, flexibility, appearance, and function. Each commonly used injection molding plastic has unique properties that make it ideal for injection molding and mass production.
ABS – Acrylonitrile-Butadiene-Styrene
ABS is a tough, impact-resistant thermoplastic with excellent dimensional stability and a smooth surface finish. Its strength and durability make it ideal for industries such as automotive, electronics, and consumer goods. Due to its good flowability and ability to reproduce fine details, ABS performs exceptionally well in injection molding.
acrylic fiber
Acrylic is renowned for its high transparency, UV resistance, and gloss, making it an ideal material for optical components, displays, and transparent enclosures. It is easily molded under high pressure and can form glass-like surfaces that remain intact even outdoors or in bright light.
High molecular weight polyethylene (HMWPE)
High molecular weight polyethylene (HMWPE) is a high-density, abrasion-resistant plastic commonly used in applications requiring impact resistance and chemical stability. It is ideal for industrial and material handling components, but due to its low coefficient of friction and high toughness, specialized molds are required.
High-impact polystyrene (HIPS)
High-impact polystyrene (HIPS) is a lightweight, high-rigidity thermoplastic with good impact resistance and processability. It is commonly used in packaging, housings, and displays. HIPS has excellent molding properties, making it ideal for manufacturing precision parts requiring consistent surface finishes.
TPO – Thermoplastic Polyolefin
TPO is a flexible, weather-resistant plastic commonly used in the automotive and construction industries. It is particularly suitable for injection molding and can be used to manufacture products exposed to UV radiation and temperature variations, offering long-term durability and resistance to cracking or fading.
PP – Polypropylene
Polypropylene is a versatile, fatigue-resistant plastic, renowned for its chemical resistance and flexibility. It is widely used in packaging, medical devices, and consumer goods. During injection molding, polypropylene exhibits good flowability and rapid cooling, making it ideal for mass production.
PC – Polycarbonate
Polycarbonate is a high-strength, heat-resistant plastic with excellent impact resistance and transparency. It is widely used in safety equipment, electronics, and lenses. When strength and transparency are equally important, polycarbonate is an ideal material for injection molding.
PVC – Polyvinyl chloride
Polyvinyl chloride (PVC) is a high-density, durable plastic with excellent chemical and weather resistance. It is suitable for manufacturing a wide variety of rigid and flexible parts, including pipes, housings, and protective components. PVC performs well in injection molding, but strict temperature and mold control are required to prevent degradation.