To be your one-stop CNC machine shop in China.

Cost-effective CNC manufacturing, prototyping, and production of custom parts.
Your project is unique, and we deliver the service it demands.

cnc parts
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10+Years

Manufacturing experience

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420+Customers

Over the world

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2M+Parts

Custom Machined

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99.9%

Satisfaction

Our Manufacturing Capabilities

Plus Minus Three Industrial Co., Ltd Precision Machining Ltd provides high-quality prototyping, low and large-volume manufacturing services to support your product development needs. Our international team will work with you to make your product ideas a reality through high-tech CNC equipment and ensure your parts are shipped on time.

If you’re looking for the right machine shop in China, we’re your source!

5 axis cnc machining

CNC Lathe, CNC Turning, 3 Axis CNC Milling, 5 Axis CNC Machining Service for simple and complex geometrical parts.

5 axis cnc machining

Laser Cutting, Bending, Punching, Welding, and Assembly Service.

5 axis cnc machining

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

Advanced On-Demand Manufacturing Solutions

Whether you need a prototype to verify a design or mass manufacturing end products, ±3 has the best solution for you.

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Rapid Prototyping

1-50 Quantity by CNC machining, laser cutting, and other techniques. 

ss brass connectors cnc turning 4 axis cnc milling as machined

Low Volume

CNC Machining and Sheet Metal Fabrication are available.

mass production

Mass Production

Consistent product quality, CNC machining, casting, and laser cutting are available.

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Sub-contract

One-Stop Services Supplier, On-demand manufacturing, Non-Disclosure Agreement available.

100+ Materials Can Be Freely Selected

No matter plastic or metal, at ±3, You Can Choose Freely For Your Unique Request.

Metals

±3 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
cnc plastic parts

Plastics

±3 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)

Industries we serve

Medical, Robotics, Consumer Products, Automotive, Aerospace, Defense, Marine, Green Energy, Industrial, and many more.

cnc machine shop

Why Choose ±3?

Saving Your Cost

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

Engineering Support

Based on our experience, we will analyze the manufacturability of your parts, from material selection, design advice, to reduce cost tips.

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!

" ±3 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
President
"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. ±3 has always given us exactly what we needed ."
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Dennis J.
Engineer

Our Amazing Clients:

Get your parts into production today!