JST Industry

Provides professional CNC plastic machining services

High-Precision Plastics Machining & Processing For Diverse Applications

Plastic materials are favored for CNC machining because of their light weight, cost effectiveness and design flexibility.
Here are some of the significant advantages of choosing plastics for CNC machining:


The low density of plastics makes them popular for applications that require weight reduction, such as portable electronic devices.


Plastic materials are often more economical than metals and are suitable for mass production.

Design Flexibility

Plastics are easy to mold and process, allowing for complex geometries.

Versatile Applications

Plastic materials are used in a variety of industries, including medical, aerospace, electronics and automotive.

Plastic Properties and Applications

JST Industry offers CNC machining services for a wide range of plastic materials to meet the specific needs of different industries with regard to material properties.
Below are some key properties of the alloys and examples of their applications:

Medical Devices

Used in the manufacture of disposable medical devices and diagnostic equipment.

Electronics Industry

Used in the manufacture of housings and insulating components for electronic devices.


For the manufacture of interior trim and some non-structural components.


Transparent plastics such as acrylic are used for products that require optical clarity, such as display racks and lamps.

CNC Plastic Machining Parts

Plastic Surface Treatments and Finishing

JST Industry offers a variety of surface finishing options after CNC machining plastic parts to enhance the appearance, durability and functionality of the product.
Below are a few common surface finishes:
Painting: Painting services are offered in a variety of colors to meet customers' individual needs for product appearance.

Plating: Plating improves the abrasion resistance and electrical conductivity of plastic parts.

Polishing: Provides a smooth touch and high gloss to plastic surfaces.

Laser Engraving: Provide fine marking and customized pattern design.
Alloy Machining Cases and Feedback​​​​​​​
  • Electronics Designer, Shenzhen, China
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    “When designing a new smartwatch, we chose JST Industry for CNC machining of the plastic case. They not only met our stringent requirements in terms of machining accuracy, but also provided valuable advice on design optimization. The look and feel of the final product exceeded our expectations, thanks in large part to JST Industry's professional services.”
  • Medical Device Company, Boston, USA
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    “For our disposable medical devices, JST Industry demonstrated extreme machining precision and a deep understanding of medical-grade plastic materials. Their CNC machining services ensure the consistency and reliability of our products, which is critical for medical applications. In addition, we were impressed with their quick response and flexible production schedule.”
  • Automotive Interior Supplier, Stuttgart, Germany
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    “JST Industry's CNC plastic machining technology provides the precision and sophistication we need in the manufacturing of automotive interior parts. The plastic parts they machine are not only of the highest quality, but also meet an extremely high standard in terms of surface finish, making our interior products more attractive in the marketplace.”
  • Consumer Electronics Company, Tokyo, Japan
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    “Our products require the use of specialty plastic materials to meet specific electrical and chemical properties.JST Industry's expertise and experience in CNC machining of plastics allowed us to quickly transition from the prototype stage to mass production. The quality of their machining and attention to detail have brought our products to a high standard of performance and appearance.”


  • Q I am designing a new product that requires CNC machining to create a prototype and final product. How do I select the most suitable material for CNC machining for my project?

    A At JST Industry, we understand that choosing the right CNC machining material is critical to product design. You should first consider the scenario in which your product will be used, including the required mechanical properties, temperature resistance, corrosion resistance, and cost-effectiveness. We offer a wide range of material options including, but not limited to, aluminum alloys, stainless steel, brass, various alloys, and many plastics. Our team of experts can assist you by selecting the most appropriate material for your specific needs and provide expert design optimization advice to ensure an efficient and cost-effective CNC machining process.
  • Q I would like to know how the selection of different materials in CNC machining process affects the final machining cost?

    A At JST Industry, we recognize that material selection has a significant impact on CNC machining costs. The type of material, difficulty of machining, and market availability all affect its price. For example, steel is widely used due to its lower cost, while titanium alloys and certain advanced alloys are more expensive due to their higher material cost and machining difficulty. In addition, the machinability of the material also affects the cost, e.g. aluminum alloys are usually less expensive due to their ease of machining. Our quoting system takes all of these factors into account to ensure you get the most accurate cost estimate.
  • Q What are some design practices that can help me reduce machining costs when designing CNC machined parts?

    JST Industry, with years of industry experience, offers the following design optimization suggestions to reduce CNC machining costs:
    Consider non-functional internal right angles in the design and change them to R angles to reduce clearance costs.
    Reduce the number of bone positions on the part to minimize machining time and complexity.
    Increase wall thickness where appropriate to minimize the risk of deformation of the part during machining.
    Use standard hole sizes and threads whenever possible to simplify the machining process.
    Work with our engineers to select economically sound material and finish options.
    Mark only the tolerances that are necessary and most important to the design to avoid unnecessary accuracy requirements.
  • Q I have stringent requirements for accuracy in my products, what tolerances can be achieved with CNC machining and how does this affect the quality of the final product?

    A At JST Industry, our CNC machining services are capable of meeting extremely high tolerances, often to ±0.01mm, thanks to our advanced machining equipment and strict quality control processes. This high-precision machining capability ensures consistency and reliability of parts, which is especially important for assemblies that require high-precision fit. Our quality assurance system includes multiple inspections and calibrations to ensure that each part conforms to the customer's design drawings and tolerances, thus guaranteeing the quality of the final product.
  • Q I am concerned that the surface of a CNC machined part may have burrs or be uneven. How can I ensure that the surface of the machined part is of the desired quality?

    JST Industry utilizes a range of advanced machining technologies and stringent post-processing procedures to ensure the surface quality of CNC machined parts. Our operators perform careful deburring after
    machining, including hand trimming and machine finishing, to ensure that all parts have a smooth, angular-free surface. In addition, we use precision measuring tools to check the dimensions of the parts several times to ensure that the dimensional accuracy meets the tolerance requirements. Depending on the needs of our customers, we also offer a variety of surface treatment services, such as anodizing, plating, powder coating and painting, to further enhance the appearance quality and corrosion resistance of the parts. Through these measures, we are ble to ensure that the surface quality of each part meets or exceeds our customers' expectations.
Get in touch for inquiry

Kunshan JST Industry Co., Ltd is a professional manufacturer of CNC machining parts, which were applied to the field of medical, aerospace & aviation, electronics, security & safety, industrial equipment and automotive.

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   86-18915758793

   86-512-55260690

   info@jstindustry.com


   Carrolgu

   86-18915758793