On-demand CNC Machining Services from China

Deliver your CNC Machining parts as design specifications, on time, and at a cost-effective factory price.

Save 30% cost on average!

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Manufacturing experience



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Custom Machined




Precision CNC Machining Services Supplier in China

AT Machining is a leading CNC machining services supplier in China.
Our 3-axis, 4-axis, 5-axis milling centers, and CNC turning machines enable to make precise, high-quality products that fulfill your custom specifications.

We offer a quick quotation, on-demand lead times, and design-for-manufacturability feedback on materials and manufacturing processes for your custom CNC machined parts, no matter your industry. 

3 Axis, 4 Axis and 5 Axis CNC Machining Service for simple and complex geometries parts.

CNC turning with live tools combines lathe and milling capabilities to machine parts with cylindrical features.

Add multiple finishes to your parts, such as Anodizing, Sand Blast, Powder Coat, Plating, etc.

Advantages of AT Machining Services

high quality and reliable

High Quality & Reliable

Our highly-skilled engineers, machinists and quality control professionals ensure every product meets industry standards - from best-in-class software to state-of-the-art CNC technologies and rigorous quality control. As a result, you can be sure your parts will exceed expectations the first time!

wide selection of materials

Wide Selection of Materials

Our company is equipped to supply you with an extensive variety of superior materials - from metal parts such as aluminum, steel, and stainless steel to brilliant alloys like Kovar, Invar, and Titanium. We also provide plastic options, including POM, PTFE, PC, PEEK, and PET. Whichever material fits your project needs best – we have it!

customized cnc machining

Customized CNC Machining

Our firm proudly provides custom CNC machining services that meet the individual needs of our clients. Whether you are looking to replace aging parts, work with challenging materials or manufacture items requiring non-standard features - we have a solution for your business!

cost effective manufacturing

Cost-effective Manufacturing

At AT-Machining, we focus on cost savings and efficiency through our adherence to design for manufacturing (DFM) criteria. Our approach prioritizes part designs that are optimized for production, minimizing start-up costs as well as material and feature expenses — resulting in an accurate yet effective service at a competitive price.

rapid production & delivery

Rapid Production & Delivery

Our strategic proximity in the heart of Southern China's prosperous Greater Bay Area ensures quick and secure product delivery worldwide. With convenient access to major shipping ports, rest assured that you are getting your items quickly without any delay!

top grade machining shop

Top Grade Machining Shop

At our machine shop, we take quality and environmental standards seriously. We have earned ISO 9001:2015 certification for excellence in quality management systems, are compliant with the extensive requirements of ISO 14001:2015 to ensure responsible environmental practices, as well as hold an ISO 13485-2016 standard certificate that demonstrates proficiency in producing medical devices.

Our Experience and Capability

At AT-Machining, we pride ourselves on being a leading CNC machining service supplier in China, offering exceptional precision, quality, and efficiency to cater to the diverse needs of our clients.

Our extensive range of services includes advanced CNC machining and various finishing options such as nitriding, plating, and anodizing to deliver unparalleled results. Equipped with state-of-the-art technology and experienced professionals, we can work with a wide array of materials, including various grades of metal, plastic, and ceramic.

With years of experience in the industry, we have honed our skills to provide tailored solutions that meet the highest standards and exceed expectations, ensuring the utmost satisfaction for our valued customers.

Gallery of CNC machined parts

We machine rapid prototypes and low & large volume production orders for customers in multiple industries: medical devices, aerospace, automotive, defense, electronics, hardware startups, industrial automation, machinery, marine and robotics, and many more.

Materials for CNC Machining Parts

AT offers a wide variety of materials for custom CNC machining,  plastic, metal, and ceramic, including but not limited to:

CNC Metals

Aluminum: Aluminum’s strength-to-weight ratio, affordability, and recyclability have made it widely used across industries worldwide.

Alloys: 6061-T6, 7075-T6, 2024, 5052, 6060, 5083, 2017, 6082

Finishing Options: Alodine,  Anodizing Types II, III, III + PTFE, ENP, Media Blasting, Nickel Plating, Powder Coating, Tumble Polishing

Learn More

aluminum cnc machining service china

Stainless steel: Stainless steel’s corrosion resistance and ductility make it ideal for long-term exposure to elements and easy shaping into different forms

Finishing Options: As machined, Bead Blasted, Polishing, Decorative Chrome Plating, Powder Coat, Nickel Plating, Gold Plating, Silver Plating

Alloys: SS303, Stainless Steel 304/304L, Stainless Steel 316/316L, Stainless Steel 17-4, Stainless Steel 416, etc.

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ss18 8 stainless steel cnc turning services

Alloy Steel: Alloy steel is steel mixed with elements like manganese, nickel, and chromium to enhance its strength, hardness, corrosion resistance, and durability, tailored to meet specific application needs.

Alloy: AISI 1215, AISI 4140, AISI 4340, AISI 8620, AISI 4130

Finishing Option: Polishing, Plating, Painting, Powder Coating and etc.

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cnc machined alloy steel gears

Tool Steel: Tool steel is a type of high-carbon and high-alloy steel that is specifically designed to be used in the manufacture of cutting tools, dies, and molds. It is valued for its high hardness, wear resistance, and toughness, which make it suitable for applications where the tool is subjected to repeated impacts or stresses.

Alloy: A2 Tool Steel, D2 Tool Steel, O1 Tool Steel, S7 Tool Steel, M2 Tool Steel

Finishing Option: Bead/Sand Blast, Polishing, Plating, Painting, Powder Coating, Heat Treatment and etc.

tool steel cnc machining and grinding

Brass: Brass is an alloy of copper and zinc, especially metal material with more than 20% zinc content, which is the most commonly used metal material in cnc machining

Finishing Options: Nickel Plating, Bead Blasted, Gold Plating, Silver Plating

Alloy: C360, C260

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brass precision cnc machining

Copper: Copper is a soft, malleable metal with excellent thermal and electrical conductivity, making it an essential material in many industries.

Grade: C10100, C11000, C12200, C14500, C17200 

Finishing Option: Plating, Polishing

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copper cnc machining milling

Titanium:Titanium has a low density and high strength, making it ideal for applications that require a strong yet lightweight material, such as aerospace, automotive, and biomedical industries. It is also highly resistant to corrosion and can withstand exposure to many chemicals and environments

Alloy: Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo, Ti-3Al-2.5V

Finishing Option: Polishing, Anodizing, Sandblasting, Chemical etching, Laser engraving and etc.

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titanium cnc machining at machining services

CNC Plastics

POM (Delrin/Acetal): High stiffness, good moisture resistance, high wear-resistance, and low friction, easy to machine

Color: White, black, brown

Grade: POM-C, POM-H, UV stabilized POM, Food-Grade POM

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pom delrin acetal cnc machining (2)

PMMA: PMMA is commonly known by the trade name “acrylic” or “plexiglass”. It is a lightweight and shatter-resistant material that is often used as a glass substitute in applications such as skylights, displays, signage, and lenses

Color:  Transparency

Grade: Extruded PMMA, Cast PMMA, Impact-Modified PMMA, UV-Stabilized PMMA, Heat-Resistant PMMA

pmma acrylic cnc machining services

PEEK: PEEK is a high-performance engineering thermoplastic with excellent mechanical, chemical, and thermal properties, short for Polyether Ether Ketone

Color: Beige with no transparency

Grade: Unfilled PEEK, 30% glass-fiber reinforced PEEK, 30% carbon-fiber-reinforced PEEK, Bearing Grade PEEK

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cnc machined peek parts

ABS: ABS is tough, rigid, and lightweight, making it an excellent material for use in applications such as automotive parts, toys, electronic housings, and consumer goods. It is also resistant to impact, chemicals, and heat, making it a popular choice for use in harsh environments

Color: ABS is naturally opaque and comes in a range of colors including black, white, and gray

Grade: General purpose ABS, Flame retardant ABS, High impact ABS, Heat-resistant ABS

abs cnc machining

Nylon: Nylon is a strong, durable, and elastic material that is commonly used in textiles like clothing and ropes. Its resistance to abrasion, chemicals, and moisture makes it popular for industrial applications, such as gears, bearings, and automotive components

Color: Nylon is often used in its natural off-white or slightly yellowish color

Grade: Nylon 6, Nylon 6/6, Nylon 11, Nylon 12

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nylon cnc machining

PTFE: PTFE(Teflon) is a high-performance plastic material known for its exceptional chemical resistance, low friction coefficient, and high-temperature resistance

Color: The color of PTFE is typically white or off-white


cnc machined ptfe teflon plastic parts

PVC: PVC stands for polyvinyl chloride, which is a synthetic thermoplastic polymer that is widely used in various applications. PVC is a versatile material that can be rigid or flexible

Color: clear or opaque


cnc machined pvc plastic components

PEI: PEI has excellent mechanical, thermal, and electrical properties, as well as good chemical resistance

Color: Amber or brownish color

Grade: Unfilled PEI, Glass-Filled PEI, Carbon-Filled PEI, Ultem PEI

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ultem 2300 parts (pei) precision machining

Surface Finishes for CNC Machined Parts

Apart from custom CNC machining services, we also provide complete surface finishing options for precision machined parts. If you require custom finish not on this list, please do get in touch as it is likely we can source it for you.

as machined (ra 3.2μm ra 126μin)
As machined (Ra 3.2μm / Ra 126μin)

This finishing option with the shortest turnaround time. Parts have visible tool marks and potentially sharp edges and burrs, which can be removed upon request.

smooth machining (ra 1.6μm ra 63μin)
Smooth machining (Ra 1.6μm / Ra 63μin)

Smooth machining is similar to a ‘As machined’ finish, but with less visible machine marks. Parts are machined at a lower feed rate, with no hand polishing.

polishing (ra 0.8μm ra 32μin or better)
Polishing (Ra 0.8μm / Ra 32μin or better)

Polishing is the process of creating a smooth and shiny surface by rubbing it or by applying a chemical treatment.

bead blasting cnc machined parts
Bead Blasting

Machined parts are bead blasted with glass beads which results in a uniform grainy texture and reduced machining marks.

tumble finishing

It is a process that tumbles vibrating media on machined parts to remove sharp edges and burrs.
Tumbling can be used to remove machine marks from exterior surfaces.

bead blasted + anodizing type ii (glossy)
Bead blasted + Anodizing type II

The parts are bead blasted to #120 grit before being anodized type II—ideal for increasing the aluminum part’s corrosion resistance and cosmetic effects. 

bead blasted + anodized type iii (hardcoat)
Bead blasted + Anodized type III (Hardcoat)

The parts are bead blasted to #120 grit before being anodized type III. Type III (Hard Coat) is thicker and adds a wear-resistant layer to Type II’s corrosion resistance, suitable for functional applications.

black oxide cnc machined parts
Black Oxide

Black oxide is a conversion coating that is used on steels to improve corrosion resistance and minimize light reflection.

powder coated
Powder Coated

This is a finish of applying powdered paint to the components and then baking it in an oven, which results in a stronger, more wear- and corrosion-resistant layer that is more durable than traditional painting methods. 

chromate conversion coating (alodinechemfilm)
Chromate Conversion Coating

Chromate conversion coating is used to improve the corrosion resistance of aluminum and aluminum alloys while keeping their conductive properties. It is also applied as a base layer prior to priming and painting parts.

nickel plating

Include Nickel Plating, Silver Plating, Gold Plating, Zinc Plating, Chrome Plating, Tin Plating and etc, it is ideal to reduce corrosion, improve the appearance and function of solderability and electrical conductivity.

cnc precision dlc parts
DLC Coating

DLC (Diamond-Like Carbon) coating is a thin, amorphous carbon film that exhibits exceptional hardness, low friction, and high wear resistance, making it an ideal surface treatment for various applications such as automotive components, cutting tools, and medical devices.

*Other surface finishes are also available. Please feel free to contact us now. Learn More

Industries We Serve

Tailored CNC Machining & Finishing Solutions for Diverse Industry Needs

Why Choose Our Custom CNC Machining Service

Saving Your Cost

You will save 30-50% of the cost because of our efficient production capacity and cost control.

High Precision Tolerances

Offering tolerances range from +/-0.001′′ to 0.005′′, depending on client specifications. We are experts in producing custom components.

On-demand Production

Our CNC milling services will support you from 1 pcs to 10k+ pcs, no matter prototype, low volume manufacture, or mass production.

Quality Assurance

As an ISO 9001:2015 certificated manufacturing company, we offer SGS, RoHS, material certifications, and inspection report for our customers.

Our Happy Clients!

"AT Machining was able to deliver an accurate and quick service for high quality CNC parts. They offered a range of fabrication options and materials to choose from, to suit our specific budget, lead-time and material requirements. Can't recommend enough.!!."
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Daniel Turner
"I cannot express to you how happy I am to do business with you, the parts are flawless! The quality is exactly how I hoped it would be! Please give the highest regards to the CNC programmer(s) that handled the parts! And I also thank you for the excellent packaging!."
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Marc Bos
Production Manager
"We inspected the parts, everything was within tolerance in terms of dimensions, and the surface finish on the machined faces is really good. AT has always given us exactly what we needed ."
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Dennis J.

We are here to solve your problem and delivery your needs

CNC Machining FAQs

NO! – No minimum quantity! AT Machining provides prototypes and short to medium-run production machining services.

General Machining Tolerances on metal to +/- 0.005″ (+/- 0.127 mm) following ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010”(+/- 0.254 mm).

Precision Machining Tolerances down to ±.0002″ (0.005mm).
AT can manufacture and inspect to tight tolerances per your drawing specifications.

Lead times are 2 weeks for prototypes and 3 to 4 weeks for production runs. Emergency and rush services are available.

  1. CNC machining is a manufacturing process that uses computer-controlled machines to create precise and complex parts from raw materials. The process involves using a computer program, or CAD (computer-aided design), which is used to create a 3D model of the part to be produced. The CAD file is then converted into a format that can be read by the CNC machine.
  2. The computer program controls the CNC machine with various tools, such as drills, cutters, and grinders. The raw material, such as metal or plastic, is loaded onto the machine’s worktable and secured. The CNC machine then uses its tools to cut and shape the material according to the specifications in the CAD file.
  3. During machining, the CNC machine constantly checks its position and adjusts its movements to ensure that each cut is made precisely where it needs to be. This level of precision allows for highly accurate and consistent results.
  4. Once the machining process is complete, the finished part is removed from the machine and inspected for quality control. Any necessary finishing touches can then be applied before the part is ready for use in its intended application.

CNC machining and 3D printing are two popular manufacturing methods used to produce parts with different advantages and limitations.

CNC machining involves removing material from a solid block using precision cutting tools according to a computer-aided design (CAD) file. It can produce highly accurate and strong parts from various materials, including metals, plastics, and woods, making it ideal for industrial applications.

On the other hand, 3D printing builds parts layer-by-layer from a digital model designed in CAD software. While slower than CNC machining, 3D printing offers greater design flexibility and is well-suited for producing complex geometries or small-scale prototypes.

The choice between these two methods depends on the product’s specific requirements, such as strength, surface finish, complexity, cost, and time-to-market.

There are several types of CNC machining processes, including milling, turning, drilling, and grinding.

Milling involves removing material with a rotating cutting tool to create complex shapes and contours.

Turning rotates the workpiece while a cutting tool removes material to create cylindrical parts.

Drilling uses a rotating cutting tool to create holes in the workpiece.

Grinding uses an abrasive wheel to remove small amounts of material and create smooth surfaces.

Additionally, other types of CNC machining processes, such as electrochemical, laser, and waterjet, use different methods to remove material from the workpiece. The type of CNC machining used depends on the part’s geometry, the machining material, and the required precision and surface finish.

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