Custom Plastic Injection Molding Service

From intricate geometries to tight tolerances, APT-Mold delivers high-precision injection molding for demanding designs.

Plastic Injection Molding at APT

Plastic Injection Molding for All Industries

Plastic injection molding is a process that utilize the pressure powered by injection machine to inject the hot melted plastics into the tooling, cooling and forming the parts. It is widely used in many industries and helps many parts to achieve the ideal function.

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Plastic Injection Over-molding

Plastic & Plastic over-molding service

Plastic injection over-molding process is widely used on plastic parts with different material or different color, or to achieve specific function. It can not only improves the beauty, comfort and grip of the product and other functions, but also through different molding processes, such as two-color injection molding and secondary injection molding, to achieve the best adhesive effect.

Plastic Injection Over-molding

Plastic & Metal over-molding service

The plastic injection molding process combines plastic and metal components. It not only forms a protective layer on the metal surface to improve the durability of the product; it also improves the functionality of the product by providing a non-slip gripping surface, sealing, insulation, or decoration.

Why choose APT for Plastic Injection Molding

High efficiency and rapidity

APT is experienced in molding production. Once the parameters of the injection molding machine are set, the process can produce a large number of parts in a relatively short time, which is especially suitable for high volume production.

Certified Quality Management System

APT assures the quality of your machined parts with our ISO 9001:2015 and IATF 16949:2016 certified quality management system.

Precision and accuracy

APT can produce complex parts with complex shapes and strict tolerances to ensure the accuracy of product dimensions. Our general tolerances are in line with industry standards. The molding plastic parts can reach the tolerance standard of DIN 16901.

Cost effectiveness

APT use automotive manipulator and automotive gate trimming system in the injection molding process, which reduces labor costs and overhead, making it a cost-effective way to produce plastic parts.

Design and manufacturing flexibility

Manufacture the complex parts that the other process may not produce, slide, lifter, hand load insert will be good for your complicated mechanical structure. interchangeable insert will help you save cost.

Quality control

APT running strictly with quality assurance systems to assure we meet the highest of quality standards. And we have professional measuring equipment such as coordinate measuring machine, image measuring machine and other testing equipment.

Why Choose Our Plastic Injection Molding Service?

High Efficiency & Rapidity

APT-Mold is an experienced plastic injection molding company, that specializes in producing high-quality injection molded parts quickly and efficiently, making it ideal for high-volume production.

Certified Quality Management System

APT assures the quality of your machined parts with our ISO 9001:2015 and IATF 16949:2016 certified quality management system.

Precision & Accuracy

Our injection molding services are capable of producing complex parts with intricate shapes and tight tolerances. We adhere to industry-standard general tolerances, with plastic parts meeting DIN 16901 tolerance requirements.

Cost Effectiveness

With automated manipulators and an automated gate trimming system, APT-Mold's plastic injection molding service helps reduce labor costs and overhead, providing a cost-effective solution for producing plastic parts.

Design & Manufacturing Flexibility

APT-Mold's custom plastic molding is a great solution for producing complex parts. This approach adapts to intricate mechanical structures, including sliders, lifters, manual loading inserts, and interchangeable inserts.

Quality Control

APT-Mold operates under strict quality assurance systems to ensure we meet the highest standards. We are equipped with professional measuring tools, including coordinate measuring machines, image measuring machines, and other advanced testing equipment.

Custom Plastic Injection Molding Services for Diverse Applications

Injection molding technology with its high efficiency, high precision, material diversity, cost effectiveness, design and manufacturing flexibility, lightweight and environmental protection,  play an important role in modern manufacturing.

Automotive and Transportation

The automotive industry is one of the important application fields of injection molding process. It is used in the manufacture of various automotive components. These plastic parts help reduce vehicle weight and improve fuel efficiency.

Medical and Healthcare

In medical device manufacturing, injection molding process is used to manufacture various medical devices, syringes, infusion bags, medical equipment shells, etc. These plastic parts are essential for the proper functioning of medical devices and the health of patients.

Electronics and Appliances

The injection molding process plays an important role in the electronics and appliances industry, mainly used to manufacture housings, connectors, cables and other plastic parts for various devices.

Plastic injection molding Service

Material available & Surface finishing Options

Materials available range of plastics like ABS, Polycarbonate, nylon, Polypropylene, thermoplastic urethane, etc. We also provide a wide range of surface finishing options like polishing, texture, painting, plating, etc.

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+86 18814246095

Plastic Injection Molding FAQs

Frequently asked questions

Here are the answers to the frequently asked questions. Any other questions, please feel free to contact us at enquiry@apt-mold.com.

Plastic injection molding is a process that injects molten plastic resin into a custom mold under high pressure. Once cooled, the hardened part is ejected, and this process can be repeated multiple times, reducing costs for high-volume production. Unlike CNC machining, this method accommodates a broader spectrum of materials, including high-performance engineering plastics, and offers extensive customization options in colors, surface finishes, and intricate geometries.

With our plastic injection molding service, you can achieve consistent quality, tight tolerances, and efficient production for automotive, electronics, medical devices, and consumer goods.

Custom plastic injection molding is a manufacturing process where molten thermoplastic is injected into a precision-machined mold, cooled, and solidified into finished plastic parts. This plastic injection molding service is ideal for producing complex geometries, tight tolerances, and repeatable parts at scale.

At APT-Mold, every project begins with a design-for-manufacturability (DFM) review to ensure your part design, material selection, and tooling strategy are optimized before mold fabrication. Using your 3D CAD data, we CNC-machine high-quality aluminum or steel molds and provide initial samples for approval. Once validated, we proceed with stable production to ensure consistent quality across every batch.

As a China-based custom plastic injection molding manufacturer, we support projects ranging from functional prototypes to low- and mid-volume production parts, helping customers reduce risk, control costs, and accelerate time-to-market.

A custom plastic injection molding service enables manufacturers to produce plastic parts tailored to specific design, material, and performance requirements. Compared to standard molding solutions, it offers greater design flexibility, tighter tolerances, and highly consistent part quality—making it ideal for complex and functional components.

 

This process is especially cost-effective for prototypes and low- to mid-volume production, as lower per-part costs and excellent repeatability offset tooling investment. With access to a wide range of thermoplastic materials and process controls, custom OEM plastic injection molding services also ensure reliable performance, stable assembly, and scalability from initial samples to production-ready parts.

APT-Mold can analyze the cost of plastic injection molding parts with the DFM process, we can help you identify and address potential costs in the part’s production.

APT-Mold can analyze the cost of plastic injection molding parts with the DFM process, we can help you identify and address potential costs in the part’s production.

Our general tolerances are in line with industry standards. The molding plastic parts can reach the tolerance standard of DIN 16901. Other special requirements can have a discussion based on the products structure.

Yes. We have packaging & assembly department, which is experienced in some assembly products. Also we have equipment such as ultrasound machine and auto screw machine which can help to do assembly.

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3D Drawing | Material | Quantity | Color | 2D Drawings if available | Surface Finish