Plastic Injection Molding Services in China

Our injection molding services have been helping businesses create products from start to finish for years. We offer a wide range of services designed to assist companies of all sizes in developing and producing quality plastic components. Our team has the experience needed to handle everything from prototyping to producing high volumes of parts quickly and efficiently. We also provide additional CNC machining services.

injection molding services

Why Choose Our Custom Plastics Injection Molding Services?

Material Identification

Once you've chosen our injection molding service, it's essential that we provide you with accurate material identification so that your products are manufactured correctly and according to specifications.

Design For Manufacturability (DFM)

Designing products that are manufacturable is essential for businesses of all sizes. That's why our team of experts understands the complexities of injection molding and can help you create a design that is both beautiful and manufacturing-friendly.

A Complete Range of Services

We have a comprehensive range of services that can meet your needs and requirements. It includes CNC machining and injection molding. From prototype molding to full-scale production runs, our team has everything covered.

Quality control

Quality control is an important part of manufacturing and it's something that we take seriously at our company. We use advanced manufacturing technologies and quality control measures to ensure that every product delivered is up to par.

Injection Molding Capabilities

Our facility utilizes advanced injection molding machines capable of producing parts using different thermoplastics, including polycarbonate, nylon, and ABS. We also employ experienced technicians who understand the special needs associated with complex part designs and can work with you to ensure your project is completed on time.

Thanks to our state-of-the-art equipment, we can handle jobs of any size or complexity — from small prototypes for idea testing and proof of concept models all the way up to large production runs across multiple industries.

injection molding

Plastic Injection Molding

Plastic injection molding is a process that creates plastic products using a machine that injects the plastic material under high pressure.

The benefits of this process include improved quality, speed, and production volume.

Plastic injection molding can be used to produce a wide range of products including toys, appliances, medical equipment, etc.

Processing Services

We specialize in working with clients at every stage of the development process, from concept design through toolmaking and injection molding, to post-mold decoration, assembly, and packaging for final delivery.


Overmolding is a two-stage process of combining two or more materials to create a single, integrated product. The process involves using injection molding to combine two or more types of materials, such as rubber and plastic, into one part.

Liquid Silicone Rubber Molding

LSRM is a process that uses liquid silicone to create molds. It is a popular technique used in manufacturing and industrial applications because of its heat-resistant properties, durability, and flexibility.

insert molding

Insert molding is a specialized form of injection molding that can create parts with intricate detail. It is especially suitable for manufacturing multiple parts simultaneously, which saves time and money.

Plastic Injection Molds

Our staff has decades of experience in designing and creating molds that are tailored to the exact specifications needed by our clients. All of our advanced machinery consists of the latest technologies, which allow us to make molds with precision accuracy, and fine detail.

injection molding Parts We Customized

Injection molding is one of the most commonly used processes in manufacturing. It allows us to quickly create plastic parts with great accuracy and consistency. With injection molding, we can customize various parts to meet unique specifications and requirements.

automotive plastic injection parts
automotive plastic parts
plastic injection parts
plastic part

Materials for Injection Molding

To ensure the highest quality components, it is important to select the right materials for plastic injection molding. There are multiple types of thermoplastics that can be used in this process.

Common thermoplastic materials

Other supported materials

Additives and fiber

Acrylonitrile Butadiene Styrene (ABS)

Nylon (PA 6, PA66, PA12)

UV absorbers

Polypropylene (PP)

Polymethyl Methacrylate (PMMA/Acrylic)

Flame retardants

Polyethylene (PE)

High Density Polyethylene (HDPE)


Polycarbonate (PC)

Polystyrene (PS)



Glass fibers

POM (Acetal/Delrin)

Polyethylene Terephthalate (PET)

Polyurethane (PU)

mold tooling materials

Injection molding is a process where molten material is injected into a mold cavity and allowed to cool, forming the desired item. The choice of material for the tooling is critical to ensure that the product meets customer requirements. And there are types of injection molds.

The following are common injection mold materials:

Tool Steel: P20, H13, S7, NAK80, S136, S136H, 718, 718H, 738

Stainless Steel: 420, NAK80, S136, 316L, 316, 301, 303, 304

Aluminum: 6061, 5052, 7075

injection molding China

Surface Finishes of Injection Molded Parts

Surface finishes are a critical component in the production of a wide range of products. We understand how important these finishes can be to ensure that the final product has an aesthetically appealing look. For this reason, we provide our customers with superior surface finishes for their injection molded parts with no compromises on quality or performance.

Other manufacturing services

cnc turning

With CNC turning, it can manipulate the material into its desired shape using cutting tools with great accuracy and consistency. Depending on the material’s thickness or the design’s complexity, we use different-sized tools.

Swiss machining

Swiss CNC machining is a highly precise machine that produces complex parts with tight tolerances. The Swiss CNC machine can handle multiple-axis movements that allow complex profiles to be cut accurately and quickly – typically in one operation.

wire EDM machining

Wire EDM erodes extremely hard metals, allowing for delicate and intricate designs to be etched into the material. It does not distort or warp the workpiece, so it is ideal for precision applications such as aerospace components, medical device parts, and injection molds.

Injection Molding FAQs

Injection molding is a manufacturing process for producing plastic parts from thermoplastic and thermosetting plastic materials.

It involves melting the material and injecting it into a mold cavity, where it cools and hardens to the shape of the mold.

The plastic injection molding process is used to make a variety of plastic products, such as toys, automotive parts, and medical devices.

Injection molded parts are characterized by their tight tolerances, superior surface finishes and complex shapes.

There are a few advantages of plastic injection molding that you should know about.

First, plastic injection molding is a fast and cost-effective way of manufacturing large volumes of parts. This process is highly accurate, which allows for parts with intricate design features like undercuts, inserts, and ribs.

Plastic injection molding also has a low tooling cost, which means that it’s suitable for prototyping and production runs.

Further, plastic injection molding is lightweight and durable, making it ideal for parts that require high-quality but lightweight materials.

In addition, plastic injection molding parts are often easier to repair or replace than those made using other manufacturing methods.

Injection molded parts can be used in a wide variety of applications.

Automotive components such as brake calipers, steering gear assemblies, and door handles are all produced using injection molding.

This manufacturing technique is also widely employed in the production of electronic devices such as tablets and mobile phones.

Additionally, injection-molded plastic is often suitable for the manufacture of medical supplies like syringes and needles.

The cost of injection molding can vary depending on the part’s complexity, the material used, and the quantity needed.

However, a ballpark figure for plastic injection molding would be between $500 and $2,000. In fact, simple parts like plastic trays ornaments can be produced for under $500, while more complex parts with intricate detailing can cost upwards of $10,000 or more.

Always do your research before injection molding something as costs can vary widely from one part to another. Also, keep in mind tooling costs and lead times to get an idea of how much everything will cost in total.

Injection molding is typically cheaper than CNC for high-volume production runs. This is because injection molding machines are less expensive to purchase and operate, and they can produce parts in high quantities more quickly than CNC machining machines.

Additionally, injection molding tends to be more cost effective when producing large quantities of a product.

On the other hand, CNC machining may be more cost effective when producing low-volume parts with precision requirements. It depends on the part’s complexity and the precision required. 

Learn more about the cost of CNC machining.

Tight tolerances may restrict deviation from 0.005 inches or less for very precise parts.

Looser tolerances may allow for up to 0.010 inches of variation depending on the application and material being used.

Injection Molding Services from Prototyping to Production

For companies looking to develop their own custom products, injection molding is a great solution. At CNCFIRST, we provide injection molding services from prototyping to full production runs. Our team of experienced engineers uses advanced technology and industry-standard processes to ensure that your product meets the highest quality standards and is delivered on time.