Plastic Injection Molding

Custom Plastic Injection Molding Services

Our Plastic Injection Molding Services excel in providing specialized solutions for complex and intricate plastic components. The cutting-edge technology and expertise of JHC offer a wide range of molding capabilities, including multi-cavity molds, insert molding, and over-molding.

Our skilled engineers and technicians collaborate closely with clients to optimize part design, material selection, and production processes, ensuring cost-effective and high-quality results. We pride ourselves on handling challenging projects like tight tolerances, thin walls, and intricate geometries. From prototype development to full-scale production, our Plastic Injection Molding Services deliver exceptional precision and efficiency, meeting the unique needs of every client.

  • Precision Engineering
  • Cost-Effective Excellence
  • Customized Solutions
Plastic Injection Molding Machine -

What’s Plastic Injection Molding Process?

The Plastic Injection Molding process is a highly efficient and versatile manufacturing method to produce a wide range of plastic parts. It begins with the design and preparation of a mold, which is carefully crafted to match the desired shape and specifications of the final product. The chosen plastic material, in the form of pellets or granules, is melted and injected into the mold under high pressure.

The molten plastic fills the mold cavities, taking on their precise shape and details. The mold is opened after the plastic cools and solidifies, and the finished part is ejected. Plastic Injection Molding offers several advantages, including high production efficiency, repeatability, and the ability to create complex geometries with exceptional precision. It is widely used in the automotive, electronics, and consumer goods industries for its cost-effectiveness and reliable manufacturing capabilities.

Our Qualification for Plastic Injection Molding Service

As a leading plastic injection molding service provider, JIAHUI takes great pride in its qualifications and expertise. With years of industry experience, we have built a strong reputation for delivering exceptional solutions. Our qualifications for plastic injection molding are rooted in advanced technology, skilled professionals, and a commitment to quality.

Utilizing cutting-edge technology and state-of-the-art equipment, we ensure precise and efficient production. Our experienced engineers and technicians have in-depth knowledge of materials, mold design, and production techniques. This expertise allows us to meet the highest standards and deliver optimal results consistently. Quality assurance is paramount to our operations.

Our company has applied rigorous quality control measures throughout manufacturing, from initial design to final production. Our dedication to quality ensures that every plastic component we produce meets or exceeds our client’s expectations. With our qualifications, expertise, and unwavering commitment to excellence, JIAHUI is the trusted partner for all your plastic injection molding needs.

Manufacturing Process

Starting with CAD models, our team engineers precise molds that define the shape and features of the final part. Molten plastic material is injected under high pressure into these molds, taking on their shapes as it cools and solidifies. This technique ensures consistency and precision, making it ideal for producing intricate geometries, fine details, and tight tolerances.

Plastic Injection Molding-Manufacturing Process -
Material Weight Size Limit Surface Finish Tolerance
ABS 0.005~5KG 1000mmx500mmx500mm Ra1.6µm~0.05µm ±0.1mm
POM 0.01~5KG 1000mmx500mmx500mm Ra3.2µm~0.05µm ±0.1mm~0.2mm
PC 0.01~5KG 1000mmx500mmx500mm Ra1.6µm~0.05µm ±0.1mm
PA 0.005~5KG 1000mmx500mmx500mm Ra1.6µm~0.1µm ±0.1mm~0.2mm
PP 0.01~5KG 1000mmx500mmx500mm Ra1.6µm~0.1µm ±0.1mm~0.2mm
PEEK 0.01~5KG 1000mmx500mmx500mm Ra3.2µm~0.2µm ±0.1mm
PE 0.01~5KG 1000mmx500mmx500mm Ra6.3µm~0.1µm ±0.2mm
PVC 0.02~5KG 1000mmx500mmx500mm Ra3.2µm~0.2µm ±0.1mm~0.2mm

Our Plastic Injection Molding production Capabilities

We work with an extensive selection of thermoplastic materials, allowing us to tailor components to specific needs, whether for strength, durability, or specialized properties. Our meticulous quality control measures, including automated inspection systems, guarantee that every piece meets the strictest standards.

Materials for Plastic Injection Molding Parts

Our material selection spans a broad spectrum of properties regarding the plastic injection molding process. We \specialize in high-performance plastics like PC and PEEK, catering to applications demanding exceptional heat resistance, chemical resistance, and mechanical strength. For specialized needs, we offer elastomers and flexible materials for applications requiring soft-touch surfaces or rubber-like qualities.

  • ABS
  • PVC
  • PE
  • PP
  • POM
  • PA
  • PC
  • PEEK


ABS plastic is a thermoplastic material known for its strength, impact resistance, and toughness. It is widely used in various industries for its excellent mechanical properties, ease of processing, and versatility. ABS is commonly found in applications such as automotive parts, toys, electronics, and household appliances.


  • High-impact resistance and toughness
  • Good dimensional stability
  • Excellent chemical resistance
  • Easy to process and mold
  • Versatile and used in various applications, including automotive, electronics, and consumer goods.


PVC is a versatile thermoplastic material known for its durability, chemical resistance, and cost-effectiveness. It is commonly used in construction, plumbing, electrical insulation, and various consumer products. PVC can be flexible or rigid, making it suitable for multiple applications.


  • Excellent chemical resistance
  • High durability and long lifespan, even in harsh conditions.
  • Good electrical insulating properties
  • Versatile and can be rigid or flexible
  • Cost-effective and widely available


PE is a widely used thermoplastic material known for its excellent chemical resistance, low moisture absorption, and high impact strength. It is lightweight, flexible, and has good electrical insulating properties. PE is commonly used in packaging, pipes, automotive components, and various consumer products.


  • Excellent chemical resistance
  • High-impact strength and toughness
  • Low moisture absorption
  • Good electrical insulating properties
  • Lightweight and flexible


PP is a thermoplastic material known for its high chemical resistance, low density, and good thermal stability. It is lightweight, rigid, and has excellent moisture resistance. PP is commonly used in automotive parts, packaging, laboratory equipment, and various consumer products due to its versatility and cost-effectiveness.


  • High chemical resistance
  • Low density
  • Excellent moisture resistance
  • Good thermal stability
  • Versatile and cost-effective


POM, also known as acetal or Delrin, is a high-performance engineering thermoplastic known for its excellent strength, stiffness, and dimensional stability. It has low friction, good wear resistance, and is resistant to moisture, chemicals, and solvents. POM is commonly used in mechanical and precision parts, automotive components, and electrical applications.


  • High strength and stiffness
  • Low friction and wear resistance
  • Excellent dimensional stability
  • Good chemical resistance
  • Low water absorption


PA, commonly known as nylon, is a versatile thermoplastic material with excellent mechanical properties. It offers high strength, toughness, abrasion resistance, good chemical resistance, and dimensional stability. PA is widely used in various industries for applications such as electrical components, consumer goods, and automotive parts.


  • High tensile strength and toughness
  • Good chemical resistance
  • Low friction and wear resistance
  • Excellent dimensional stability
  • Good thermal stability


PC is a durable and transparent thermoplastic material known for its high impact resistance and optical clarity. It has good electrical insulating properties, excellent dimensional stability, and can bear a wide range of temperature. PC is commonly used in safety glasses, automotive components, and electronic enclosures.


  • High impact resistance
  • Optical clarity
  • Good dimensional stability
  • Electrical insulation
  • Wide temperature range


PEEK is a high-performance thermoplastic material known for its exceptional mechanical properties, chemical resistance, and high-temperature resistance. It offers excellent strength, stiffness, and dimensional stability, making it suitable for demanding aerospace, automotive, and medical applications.


  • High-temperature resistance
  • Excellent chemical resistance
  • High mechanical strength
  • Low flammability
  • Biocompatibility

Surface Treatment For Plastic Injection Molding Parts

For visual finesse, our offerings include expert screen printing and surface metallization. It enables us to infuse your parts with intricate designs, logos, and information.


In-Mold Decoration (IMD)

In-Mold Decoration_Plastic Injection Molding -

In-mold decoration (IMD) is a surface treatment technique used in manufacturing where a decorated film or foil is inserted into a mold before injecting plastic, resulting in a visually appealing and durable decorative finish on the molded product.


Black, Grey, Red, Blue, Gold, White, Silver, Purple

Smooth, Matte finish


Electroplating_Plastic Injection Molding -

Electroplating in surface treatment is when a metal coating is applied to a conductive surface through an electrochemical reaction. It involves immersing the object to be plated in a solution containing metal ions and using an electric current to deposit a metal layer onto the surface.


White, Black, Grey, Red, Yellow, Blue, Green, Gold, Silver, Bronze

Smooth, Semi-matte, Matte finish

Laser Carving

Laser Carving_Plastic Injection Molding -

Laser carving is a surface treatment method that utilizes laser technology to remove material from a surface, creating intricate designs, patterns, or text. It provides precise and customizable engraving on various materials, enhancing aesthetics and adding a personal touch to the surface.


Black, Grey, White, Yellow, Red, Blue, Green, Gold, Silver, Purple

Smooth, Mirror finish


Printing_Plastic Injection Molding -

Printing is a surface finish method that involves transferring ink or other pigments onto a material's surface to create images, text, or patterns. It is a versatile technique used in various industries, such as packaging, advertising, textiles, and art, to add visual appeal and convey information.


Black, Grey, White, Yellow, Red, Blue, Green, Gold, Silver, Purple

Smooth, Mirror finish

Non-conductive vacuum plating (NCVM)

NCVM_Plastic Injection Molding -

NCVM is a surface treatment process to create a thin, non-conductive metallic coating on a substrate. It enhances the appearance and provides electromagnetic shielding without interfering with electrical conductivity, making it ideal for electronic devices and other applications requiring aesthetics and functionality.


Black, Grey, White, Yellow, Red, Blue, Green, Gold, Silver, Purple

Smooth, Matte, Semi-transparent finish


Painting_Plastic Injection Molding -

Painting is especially suitable for the surface of the primary material of metal. It will strengthen the material's moistureproof& rust prevention functions and enhance its compression resistance and internal structural stability.


Black, Grey, White, Yellow, Red, Blue, Green, Gold, Silver, Purple

Smooth, Matte finish


Polishing_Plastic Injection Molding -

Polishing is the process of creating a shiny and smooth surface, either through physical rubbing of the part or by chemical interference. This process produces a surface with significant specular reflection but can reduce diffuse reflection in some materials.



Smooth, Semi-smooth, Matte, Textured finish

Bead Blasting

Bead Blasting_Plastic Injection Molding -

Bead blasting in surface treatment is a process where fine abrasive particles, such as glass beads or ceramic media, are propelled at high speed onto a surface using compressed air. This abrasive action helps to remove rust, paint, or other contaminants, leaving behind a clean and textured surface finish.



Smooth, Matte finish


Texturing_Plastic Injection Molding -

Texturing is a surface treatment technique that alters the texture or pattern of a material's surface. It involves creating intentional irregularities, designs, or patterns to enhance the surface's aesthetic appeal or functional properties, such as improving grip, reducing glare, or increasing friction.


Black, Grey, White, Yellow, Red, Blue, Green, Gold, Silver, Purple

Smooth, Buffed, Matte finish

Excellent Plastic Injection Molding Services

Our plastic injection molding services embody a commitment to excellence that sets us apart.

Typical Plastic Injection Molding Products

Plastic Injection Molding -

FAQs Related To Plastic Injection Molding

A: While plastic injection molding offers many advantages, there are also some disadvantages to consider: 

  1. High Initial Tooling Cost: Injection molding requires the creation of molds, which can be pretty expensive, especially for complex parts. Designing and manufacturing the molds can be a significant investment, especially for small production runs.
  2. Long Lead Times: Developing and producing injection molds can take time, especially when intricate designs or multiple cavities are involved. The lead time for tooling can range from weeks to months, which may be better for time-sensitive projects.
  3. Limited Design Modifications: Making design changes can be challenging and expensive once the mold is created. Any modifications or adjustments to the part design or features require modifying the mold, which adds time and cost to the process.
  4. Material Selection Constraints: Injection molding requires thermoplastic materials to be melted and injected into the mold. Not all plastics are fit for injection molding, limiting the material options available for specific applications.
  5. High Equipment and Operating Costs: Injection molding machines are complex and expensive. They require skilled operators and regular maintenance. The high operating costs can be a barrier to entry for small-scale production or prototypes.
  6. Part Size Limitations: While injection molding can accommodate a wide range of part sizes, extensive parts may need to be more practical to produce using this process. The size limitations are mainly determined by the machine's clamping force and the available mold size.
  7. Environmental Impact: Plastic injection molding relies on plastic materials, and the disposal or recycling of plastic waste can have ecological consequences. The process also consumes energy and generates greenhouse gas emissions.

Despite these disadvantages, injection molding remains a widely used and preferred manufacturing method for many applications due to its ability to produce complex but high-quality parts efficiently and precisely.

A: Injection molding molds can be made from various materials, depending on the application's specific requirements. The choice of mold material depends on factors such as the type of plastic being used, the desired part quality, the expected production volume, and cost considerations. Here are some commonly used materials for injection molding molds:

  1. Steel: Steel is a popular choice for injection molding molds due to its high strength and durability. Different types of steel, such as tool steel (e.g., P20, H13), stainless steel, and hardened steel, can be used based on specific requirements. Steel molds can withstand high temperatures and provide long-lasting performance, making them suitable for high-volume production runs.
  2. Aluminum: Aluminum molds are lighter and less expensive than steel molds, making them cost-effective for low to medium production volumes. Though aluminum has lower durability than steel, it can still withstand multiple injection molding cycles. Aluminum molds are also known for their excellent heat transfer properties, allowing for faster cooling times.
  3. Beryllium Copper: Beryllium copper is a copper alloy with good thermal conductivity and high wear resistance. It can be an ideal choice for molds that require high thermal conductivity and faster cooling times. However, beryllium copper is more expensive than steel or aluminum, so it is typically used for specific applications with beneficial properties.
  4. Pre-hardened Steel: Pre-hardened steel molds, such as P20 or 4140, have been heat-treated to achieve a certain hardness level. These molds are durable and often used for lower-volume production or prototyping purposes.

The mold material selection depends on factors such as the expected production volume, part complexity, cost considerations, and desired mold life. It is crucial to consult with mold manufacturers or experts to determine the most suitable material for a specific injection molding application.

A: The process of injection mold making generally involves several steps. Here is an overview of the typical processes involved:

  1. Part Design: The first step is to create a design for the plastic part that will be produced using injection molding. This design includes the desired shape, dimensions, features, and other specifications required for the part.
  2. Mold Design: Once the part design is finalized, the next step is to design the mold that will be used to produce the part. Mold design involves determining the number of cavities, designing the mold's core and cavity, creating the cooling system, and incorporating any necessary features for part ejection and other functions.
  3. Mold Fabrication: The mold fabrication process begins after the mold design is completed.
  4. Mold Polishing: After the mold is assembled, it undergoes a polishing process to ensure smooth surfaces and remove any imperfections or roughness that could affect the part quality.
  5. Mold Testing: Once the mold is fabricated and polished, it is tested to ensure proper functionality and performance. This includes injecting molten plastic into the mold and producing sample parts to evaluate their quality, dimensions, and other properties. Any necessary adjustments or modifications to the mold design or setup are made based on the testing results.
  6. Production: Once the mold is tested and approved, it can be used for production. The mold will be installed in an injection molding machine, and the plastic material is then injected into the mold cavities under high pressure and temperature to form the desired parts.

Collaboration and communication between the part designer, mold designer, and mold manufacturer are crucial to ensure the mold meets the specific requirements and expectations.

A: The cost of an injection mold can be relatively high due to several factors. Here are some reasons why injection mold fees can be expensive:

  1. The complexity of Design: The part design's complexity directly impacts the mold's complexity and cost. Intricate designs with complex features, undercuts, or multiple cavities require more intricate mold designs and additional machining processes, which can increase the cost.
  2. Mold Material: The choice of mold material can significantly affect the cost. High-quality, durable materials like steel can be more expensive than aluminum. The selection of the appropriate mold material depends on factors such as part complexity, production volume, and desired mold life.
  3. Mold Size: Larger molds require more material and longer machining and assembly times, which can increase the cost. The mold size is typically proportional to the size and complexity of the part being produced.
  4. Mold Complexity: Mold complexity refers to the number of cavities, slides, lifters, cooling channels, and other features incorporated into the mold design. More complex molds require additional machining and assembly processes, resulting in higher costs.
  5. Mold Tolerance and Precision: If tight tolerances and high precision are required for the part, it may involve more precise machining and finishing processes, which can increase the cost of the mold.
  6. Mold Production Volume: The expected production volume significantly affects mold cost. Higher production volumes typically justify the higher upfront cost of a more durable and long-lasting mold, such as one made from steel. On the other hand, lower production volumes may benefit from less expensive mold materials, like aluminum.
  7. Mold Manufacturer Expertise: The expertise and reputation of the mold manufacturer can also affect the cost. Highly skilled and experienced mold manufacturers may charge higher fees due to their expertise, quality of work, and ability to handle complex projects.

It's important to note that while the original cost of an injection mold can be high, it is typically a one-time investment. With proper maintenance and care, a well-made mold can be used for thousands or even millions of production cycles, making it a cost-effective option in the long run.

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