3D printing, also known as additive manufacturing, is a revolutionary process that involves creating three-dimensional objects layer by layer from a digital model. Unlike traditional manufacturing methods that subtract material from a solid block or mold, 3D printing builds objects by adding material one layer at a time.

The process begins with a digital 3D model of the object to be printed, which is created using computer-aided design (CAD) software or obtained from a 3D scanner. This digital model is then sliced into thin horizontal layers using slicing software, which generates instructions (G-code) for the 3D printer.

During printing, the 3D printer deposits successive layers of material, such as plastic, metal, or resin, according to the instructions provided by the slicing software. Each layer bonds to the previous one, gradually building up the object until it is complete.

3D printing offers numerous advantages over traditional manufacturing methods, including:

Design flexibility: 3D printing can produce complex geometric shapes and structures with a high degree of freedom. Products can be more easily customized to meet individual needs than traditional manufacturing techniques.

Rapid Prototyping: With 3D printing, prototypes can be produced quickly and cost-effectively, allowing for rapid iteration and design validation.

Customization: 3D printing enables mass customization, allowing each object to be tailored to individual specifications or preferences without significantly impacting production costs.

Waste Reduction: 3D printing manufactures on demand, using only the materials needed, reducing waste and waste of resources. At the same time, product weight can be reduced and material costs can be reduced through optimized design.

On-Demand Production: 3D printing enables on-demand manufacturing, eliminating the need for large inventories and reducing lead times for production.

Accessibility: 3D printing technology has become increasingly accessible and affordable, allowing individuals, small businesses, and large corporations alike to harness its power for various applications.

Innovation: 3D printing has revolutionized industries ranging from aerospace and automotive to healthcare and fashion, driving innovation and pushing the boundaries of what is possible in manufacturing.

YJC’S 3D Printing Service enables you to 3D Print your custom part on demand. With a focus on 3D printing, We can start manufacturing immediately according to your needs and achieve rapid delivery.

YJCPolymer excels in the realm of multi-material molding, showcasing proficiency in two-shot molding, insert molding, and overmolding techniques. This distinctive capability empowers us to integrate different Liquid Silicone Rubber (LSR) materials seamlessly with other materials within a single mold. This dynamic approach unlocks possibilities for creating intricate and diverse product designs that cater to a spectrum of applications.


Our expertise in multi-material molding provides a high level of flexibility, enabling us to meet a myriad of performance requirements. By seamlessly combining various LSR materials with other substrates, we offer a versatile solution that not only enhances product functionality but also allows for customization of colors, textures, and material properties. This flexibility extends to the optimization of manufacturing processes, streamlining production and reducing complexities.


One of YJCPolymer’s key strengths lies in its ability to accommodate complex design requirements through multi-material molding. This technique facilitates the creation of intricate structures and components that would be challenging to achieve with traditional molding methods. The precision and accuracy afforded by our advanced molding techniques contribute to the overall quality and reliability of the final products.


In addition to flexibility and complexity, YJCPolymer’s multi-material molding capabilities significantly contribute to the efficiency of manufacturing processes. By consolidating multiple components into a single mold, we streamline production workflows, reduce assembly requirements, and ultimately enhance overall manufacturing efficiency. This not only results in cost savings but also ensures a faster time-to-market for our clients.


As a prominent player in the LSR injection molding industry, YJCPolymer’s commitment to innovation, precision, and customer satisfaction is evident in our multi-material molding capabilities. Our advanced techniques empower us to offer unparalleled solutions, meeting the evolving needs of industries ranging from automotive and medical to consumer electronics. YJCPolymer stands as a trailblazer in the field, redefining possibilities through the art and science of multi-material molding.

  1. High precision

Injection molding is a molding method that heats plastic particles to melt them and then inject them into a mold to form a shape. Compared with other molding methods, injection molding has higher molding accuracy. Injection molds are manufactured with high precision and can reach 0.01 mm level accuracy requirements, thereby manufacturing fine and complex products. In addition, injection molding can inject plastics of different colors and materials into the same mold for molding, saving production costs and improving production efficiency.

  1. High production efficiency

Injection molding has high production efficiency, short injection cycle, fast production speed and high degree of automation. Injection molding machines are more advanced in automation and can automatically complete procedures such as molding, injection molding, cooling, loading, and unloading. In addition, the production efficiency of the injection molding machine can be upgraded and adjusted as needed, making it more flexible than other molding methods.

  1. Low Cost

Injection molding is an efficient and economical molding method. Compared with other molding methods, injection molding has a lower mold cost and a short production cycle. It is more time-saving, labor-saving and lower-cost during mass production. During the injection molding production process, specific plastic materials can be selected for molding according to different needs, and adjustments and upgrades can be made as needed. Injection molding machines can also be equipped with different functions according to actual needs to further control production costs.

Injection molding has many advantages such as precision, efficiency, and economy. In the current plastics manufacturing industry, injection molding technology is widely used and has become one of the important means of manufacturing plastic products. As a professional OEM/ODM manufacturer with superior technology, we can help you make the right choice for your needs.

Overmolding has become a crucial technique in modern manufacturing, offering unique advantages in product design and functionality.

What is Overmolding?

Overmolding, also known as two-shot molding or multi-shot molding, is a process in injection molding where two or more materials are molded together to form a single part. Typically, a softer or different material is molded over a substrate, creating a composite structure with enhanced properties and functionality.

How Does Overmolding Work?

The overmolding process involves several steps:

Substrate Preparation: The first step is to prepare the substrate or base part, which serves as the foundation for overmolding. This substrate is usually made of rigid plastic, metal, or another material capable of withstanding the molding process.

Mold Design: A mold is designed to accommodate both the substrate and the overmold material. The mold consists of multiple cavities and injection points to facilitate the injection of different materials.

Material Selection: Two or more compatible materials are selected for the overmolding process. The substrate material is chosen based on structural requirements, while the overmold material is selected for its desired properties, such as flexibility, softness, or grip.

Injection Molding: The substrate is placed in the mold cavity, and the overmold material is injected over the substrate. The injection molding machine cycles through multiple stages, injecting, cooling, and ejecting the finished part.

Bonding and Adhesion: During the molding process, the overmold material bonds chemically or mechanically with the substrate, creating a strong and durable bond between the two materials.

Applications of Overmolding:

Overmolding finds applications in various industries, including:

Consumer Electronics: Overmolding is used to create soft-touch grips, buttons, and protective covers for electronic devices, enhancing user experience and durability.

Automotive: Overmolded parts such as handles, seals, and trim components improve aesthetics, functionality, and weather resistance in automotive applications.

Medical Devices: Overmolding is employed to create ergonomic grips, seals, and connectors for medical devices, ensuring patient comfort and safety.

Industrial Equipment: Overmolded parts provide improved grip, vibration dampening, and impact resistance in industrial equipment and machinery.

Overmolding offers a versatile solution for enhancing product design, functionality, and performance across various industries. By understanding the mechanics and applications of overmolding, manufacturers can leverage this technique to create innovative and durable products that meet the evolving needs of consumers.

The design of injection molded parts can be very complex. It is necessary to embark on a comprehensive exploration of the key design elements that significantly affect the quality of injection molded parts. Uncover the pivotal factors that play a crucial role in ensuring the integrity, functionality, and performance of your injection molding projects.

  1. Material Selection and Compatibility:

Choosing the right material based on performance requirements, environmental conditions, and processing parameters is essential for achieving desired part quality and functionality.

  1. Wall Thickness Consistency:

Maintaining uniform wall thickness throughout the part minimizes issues such as sink marks, warping, and uneven cooling, ensuring structural integrity and dimensional stability.

  1. Tolerances and Dimensional Accuracy:

Defining precise tolerances and ensuring dimensional accuracy in the design stage guarantee part conformity and consistency, meeting performance specifications and customer expectations.

  1. Draft Angles and Undercuts:

Incorporating appropriate draft angles and minimizing undercuts facilitate smooth part ejection from the mold, preventing damage and ensuring consistent production.

  1. Surface Finish and Texture:

Careful selection of surface finish and texture enhances part aesthetics, functionality, and manufacturability, affecting factors such as mold release, appearance, and post-processing requirements.

  1. Gate Size and Placement:

Optimizing gate size and location ensures efficient material flow, reduces shear stress, and minimizes gate vestige, contributing to improved part quality and integrity.

  1. Mold Design and Tooling:

Proper mold design and tooling considerations, including venting, cooling channels, and ejector pin placement, optimize molding conditions and minimize defects like flash, warping, and short shots.

Delve into the intricacies of injection molded part design and discover how these critical elements influence the quality, performance, and reliability of your products. The journey to bring well-designed and dependable injection molded parts to market is a triumph for OEMs in every industry. Collaborating with a seasoned injection molding partner adds an extra dimension of expertise and reliability to the process.

Sustainability and environmental protection have become hot topics around the world nowadays. In the manufacturing industry, precision plastic injection molds are a vital field that play an important role in the production of various products. How to achieve sustainability and environmental protection in precision plastic injection molding has become a common concern for manufacturers and engineers.

The sustainability and environmental protection issues of precision plastic injection molding are not only related to ecological protection, but also closely linked to economic benefits and social responsibility. Here are some ideas on how to be sustainable and environmentally friendly:

  1. Material selection: Choose degradable or recyclable materials to reduce waste generation. By using biodegradable plastics or recycled materials, you can reduce your reliance on harmful plastics and thus reduce your environmental impact.
  2. Energy efficiency: Optimize the mold manufacturing process to reduce energy consumption. Adopting energy-saving equipment and technology to reduce carbon emissions during production.
  3. Design optimization:Reduce scrap and the need for secondary processing through precise mold design and manufacturing processes. Optimized design can reduce material waste and improve production efficiency.
  4. Recycling and remanufacturing: Use the mold reusability and remanufacturing technology to reduce the number of discarded molds. This not only helps reducing resource consumption but also save costs.
  5. Supplier:Cooperate with sustainable and environmentally friendly suppliers to ensure that the entire supply chain from raw materials to finished products meets sustainability standards. This helps reduce environmental risks during production.

In general, sustainability and environmental protection have become aspects that cannot be ignored in precision plastic injection molding. By taking the above measures, manufacturers can reduce the environmental burden and increase production efficiency while meeting the needs of a market increasingly focused on sustainability.

In the manufacturing industry, 3D printing technology is rising at an alarming rate, bringing disruptive changes to product design and manufacturing. The correct selection of suitable printing materials is crucial to achieve ideal 3D printing results.

  1. Material Type:

Different 3D printing technologies are compatible with specific types of materials. Common plastics include ABS, PLA, PETG, etc, which are suitable for rapid prototyping and some light-load applications. For projects that require higher strength and heat resistance, especially in industrial applications, metallic materials such as stainless steel and titanium alloys may be more suitable. At the same time, special materials such as ceramics are gradually being used in some high-tech fields.

  1. Mechanical properties:

Depending on the specific needs of the application, it is crucial to select the appropriate mechanical properties. For example, mechanical parts may require high strength and hardness, while functional parts may require greater toughness. When selecting materials, the use environment and mechanical load of the project should be comprehensively considered to ensure that the printed parts have sufficient performance.

  1. Thermal and chemical resistance:

If your project requires working in a high-temperature environment or needs to resist corrosion from chemicals, it is crucial to choose materials with good heat and chemical resistance. For example, ULTEM materials have excellent heat resistance and chemical stability, making them suitable for use in harsh environments.

  1. Ease of Printing:

Consider the ease of printing with the chosen material. Some materials require specific printing conditions, such as temperature control or ventilation. Choose a material that aligns with your skill level and the capabilities of your 3D printer.

  1. Cost:

Evaluate the cost of the material, as it can vary significantly. While some materials may be more expensive, they may offer specific benefits that justify the cost. Consider your budget constraints when choosing a material.

  1. Environmental Impact:

If environmental sustainability is a concern, consider materials that are biodegradable or made from renewable resources.

It’s essential to thoroughly research and test materials for your specific use case before committing to a large print project.  YJC polymer company offer professional 3D Printing Service that enables you to 3D Print your custom part on demand. We can start manufacturing immediately according to your needs, achieving rapid delivery, enabling you to seize the market opportunities and meet urgent customer demands.

Metal clips are ubiquitous in our daily lives, found in a myriad of applications ranging from stationery to automotive and packaging. Understanding the intricacies of metal clips manufacturing sheds light on the precision and versatility involved in creating these seemingly simple yet essential devices.


Materials and Design:

Manufacturers primarily utilize metals like steel, stainless steel, or aluminum for clip production. The choice of material depends on the intended use, considering factors such as strength, corrosion resistance, and cost. Metal clips come in various designs, including paper clips, binder clips, and automotive fasteners, each crafted with a specific purpose in mind.


Stamping and Forming:

The manufacturing process often begins with metal stamping, a technique that involves cutting, bending, and shaping metal sheets into the desired clip form. Precision tooling and dies are employed to ensure consistency in dimensions and shape. For more complex clips, additional forming processes such as deep drawing may be utilized.


Heat Treatment and Surface Finish:

To enhance the mechanical properties of the metal, heat treatment processes like annealing or tempering may be applied. Surface finishes, such as coating or plating, are then employed to improve corrosion resistance, enhance aesthetics, and provide additional functionality.


Quality Control:

Quality control is paramount in metal clips manufacturing. Rigorous inspections and testing procedures are implemented throughout the production process to ensure that each clip meets specified standards. This includes dimensional checks, material testing, and functional assessments to guarantee reliable performance.


Customization and Innovation:

Metal clips are versatile, and manufacturers often offer customization options to meet specific customer requirements. Innovations in clip design and functionality continue to emerge, driven by advancements in materials and manufacturing technologies.


Applications in Various Industries:

Metal clips find applications across diverse industries. In the automotive sector, they secure panels and components, while in offices, they organize paperwork. The medical field employs specialized clips for surgical instruments, showcasing the adaptability of metal clips in meeting unique industry demands.


In conclusion, metal clips manufacturing is a blend of precision engineering, material science, and innovation. From the stamping process to quality control measures, each step contributes to the creation of reliable and functional metal clips that play a vital role in our daily routines.

Injection molding is a common plastic processing technology and it is widely used in the automotive industry. It injects molten plastic into a mold and obtains the required parts or products after cooling and solidification. Here are several key applications of injection molding technology in the automotive sector:

Injection molding plays an important role in the manufacturing of automotive exterior parts. Automotive exterior parts often require good surface quality, dimensional accuracy and color consistency. Injection molding service has the advantages of high production efficiency, low cost, and short production cycle, and can meet the quality and quantity requirements of automotive exterior parts. For example, parts such as car bumpers, car light housings, and window frames can all be processed and manufactured through injection molding technology.

Injection molding is also widely used in the manufacture of automotive functional parts. Automotive functional parts mainly include instrument panels, seat accessories, air conditioning outlets, etc. They play an important role in the normal operation and driving experience of the car. Injection molding service can meet the manufacturing requirements for dimensional accuracy, strength requirements and complex shapes of these parts. These functional parts can be mass-produced to ensure product quality and consistency through injection molding.

Injection molding service can also be used to manufacture automotive interior parts. Automotive interior parts include dashboards, door panels, center consoles, etc., which have an important impact on the comfort and aesthetics of the car. Injection molding can produce interior parts with complex structures and various shapes, and can achieve color changes during the production process. This makes car interior design more flexible and diverse, meeting the needs of different consumers.

With the development of the automobile industry, injection molding is also constantly innovating and improving. In recent years, some new injection molding technologies have been introduced into the automotive industry, such as two-color injection molding, multi-layer injection molding, chrome-plated injection molding, etc. These new technologies make the manufacturing of auto parts more refined, personalized and environmentally friendly. For example, two-color injection molding technology can simultaneously inject two different colors of plastic into one mold, giving the surface of automobile parts a unique color effect.

Injection molding technology is widely used in the automotive industry and is constantly innovating. It meets the manufacturing needs of automotive exterior parts, functional parts and interior parts through efficient, precise and flexible processing methods. With the introduction of new technologies, injection molding will continue to play an important role in the automotive industry, driving automotive manufacturing toward higher quality and more personalization.

Electrical Discharge Machining (EDM), as a highly precise metal processing technique, has brought revolutionary changes to the manufacturing industry. This advanced method utilizes the magical power of electrical pulses to carve and shape various metal workpieces, especially those made from hard-to-machine high-hardness materials.


Principle of Operation:

In EDM, manufacturers use computer-controlled electrodes and the charge difference between them and the metal workpiece to achieve precise material removal. This is done by generating high-frequency electrical pulses between the electrode and workpiece, triggering electrical discharge sparks. These tiny yet intense electrical sparks create momentary high temperatures on the metal surface, causing metal particles to vaporize and achieve the desired sculpting, cutting, or forming effect.


Application Fields:

EDM finds widespread application in many manufacturing industries, particularly in mold manufacturing, aerospace, medical devices, and the automotive industry. Its versatility lies in its ability to handle various materials, including steel, aluminum alloys, and even high-hardness ceramics. This makes it a powerful and flexible process capable of meeting the demands of diverse and intricate design requirements.


Advantages and Challenges:

The advantages of EDM lie in its ability to achieve extremely high precision, even handling details as small as a few micrometers. However, it also faces challenges such as relatively slow processing speeds and electrode wear. Nevertheless, for applications that demand exceptional precision and surface quality, EDM remains a preferred technology.


Overall, EDM, as a highly specialized and precise technology, opens up new possibilities for the manufacturing industry. Its widespread application not only propels industrial development but also provides designers and manufacturers with greater creative space.