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!



Manufacturing experience



Over the world



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. 

5 axis cnc machining.jpg

CNC Milling

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

custom machining metal.jpg

CNC Turning

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

surface finish.jpg

Finishes Services

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

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.

40+ Materials Can Be Freely Selected

No matter plastic or metal, at AT Machining, You Can Choose Freely For Your Unique Request.


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

Aluminum Brass Stainless Steel
Steel Copper Titanium
Cast Iron Tool Steel Bronze
cnc metal parts 1.jpg
cnc plastic parts.jpg


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

POM Nylon PTFE (Teflon)
PEEK ABS Polycarbonate
PVC Ultem PMMA (Acrylic)

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.webp
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.webp
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.webp
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.webp
Bead Blasting

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

tumble finishing.webp

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.webp
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.webp
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.webp
Black Oxide

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

powder coated.webp
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.webp
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 1.jpg

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.

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


Our Quality Promise

cnc machine shop.jpg

Why Choose AT?

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.!!."
image 3.jpg
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!."
image 5.jpg
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 ."
image 4.jpg
Dennis J.

CNC Machining FAQs

Do you have a minimum order quantity?

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

What type of design files does AT Machining accept for quoting?

For the 3D drawing, we would prefer STEP, IGES, or X_T format. For the 2D drawing, we would prefer PDF format there are tolerances with the dimensions if possible.

How can I pay AT Machining?

AT Machining accepts payment in two ways: 1. Bank to bank wire transfer 2. PayPal

What general tolerances can AT Machining achieve?

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).

What precision tolerances can AT Machining achieve?

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

How quickly can I get my parts?

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

Want To Talk With Us?

Leave your details and one of our experts will contact you!

*In case you have designs or other files you need to send to us, please send them to: info@hongjusilicone.com

Request for Quote

*All inquiries will be responded to within 24 hours.

Download Catalog

Fill in the form below, and we will send you our entire catalog immediately!