Best Custom CNC Machining Services Manufacturer in China


Are you looking for a reliable, quick-turn CNC machining services supplier of machined plastic and metal parts? You come to the right place.  At Plus Proto, we provide custom CNC machining services to engineers, product developers, designers. Our instant quoting and quick lead time can meet your custom CNC parts, flexible production, and development stage.

With all kinds of 3 axis, 4 axis, 5 axis CNC machines, we offer rapid CNC prototypes, low-volume machining, and mass production. Meanwhile, there are more than 40+ metal and plastic materials in stock at Plus Porto, we can easily meet all kinds of parts applications and industries.

Let’s help you make your idea into reality from your drawings now.

CNC Machining Manufacturers in USA
Rapid Prototyping Manufacturer

What Is CNC Machining

CNC (Full name is Computerized Numerical Control) machining is one of the manufacturing processes.  CNC machining equipment can automatically process any products and parts directly according to the program prepared by the technicians in advance.


Since the CNC machining services center can complete a variety of processes intensively and automatically, it avoids human operation errors, reduces workpiece clamping, measurement and machine tool adjustment time, and workpiece turnover, handling, and storage time, greatly improving processing efficiency and processing accuracy, So it has good economic benefits.

CNC machining services ability and equipment is the enabling technology and the most basic equipment for the development of emerging high-tech industries and cutting-edge industries. The information industry, biological industry, aviation, aerospace, and other national defense industries in the world widely adopt CNC machining technology to improve manufacturing capabilities and improve market adaptability and competitiveness.

CNC Machining Metal Materials


  • CNC Aluminum Machining: Aluminum 6061, Aluminum 5052, Aluminum 2024, Aluminum 6063, Aluminum 7050, Aluminum 7075 or another custom;
  • CNC Copper/Bronze/Brass Machining: Copper 260,Copper 360,Copper C93,Copper 101,Copper C110 or other custom;
  • CNC Stainless Steel Machining: Stainless Steel 15-5,Stainless Steel 17-4,Stainless Steel 18-8,Stainless Steel 303,Stainless Steel 316/316L,Stainless Steel 416,Stainless Steel 410,Stainless Steel 420,Stainless Steel 440C,Nitronic 60 (218 SS) or other custom;
  • CNC Steel Machining: Steel 1018,Steel 1215,Steel 4130,Steel 4140,Steel 4140PH,Steel 4340,Steel A36 or or another custom;
  • CNC Titanium Machining: Titanium (Grade 2), Titanium (Grade 5), or another custom;
  • CNC Zinc Machining

CNC Machining Plastic Materials


  • ABS
  • Acrylic
  • Delrin(Acetal)
  • Garolite G10
  • HDPE
  • LDPE
  • Nylon 6/6
  • PC(Polycarbonate)
  • PEEK
  • Polypropylene
  • PTFE (Teflon)
  • PVC
  • PMMA

If you can NOT find your custom materials above, please contact us freely.

China Rapid Prototyping services Finishes

CNC Machining Finishes Options

At Plus Proto, we supply a lot of finishes processing for clients. We can make your parts not only high precision but also beautiful like art.

  • Standard (As machined)
  • Bead Blast
  • Anodized (Type ll Or Type III)
  • Titanium Anodized
  • PTFE Impregnated Hard Anodized
  • Passivation
  • Powder Coat
  • Electropolishing
  • Electroless Nickel Plating
  • Silver Plating
  • Zinc Plating
  • Gold Plating
  • Or Other Custom
  • No MOQ requests, we can star from 1 piece;
  • Low-volume production can help you save investment;
  • The tolerance usually as per customer’s 2D drawings;
  • If NO 2D drawings from clients as per ISO 2768-M;
  • Usually, the lead time is 3- 7 working days. It depends on the specific cases.
  • We have 2 shifts works which can help you accelerate projects if needed.
  • Plus Proto can accommodate any standard thread size;
  • We can also machine custom threads;
  • Sharp edges are deburred by default;
  • Also can be made as customized.

Benefits of Cooperation with Plus Proto


  • Rich Experience: Our core team has more than 20 years of CNC Machining industry experience. We can give professional guidance to you from prototypes to mass production.



  • One-Stop Service: With 3 axis, 4 axis, 5 axis advanced CNC processing equipment, we can give clients CNC milling, CNC turning, surface treatment, assembly solutions, Sheet Metal Fabrication .etc.



  • Quality Worry-Free: We cooperate with Fortune 500 companies in the world, such as  BMW, TESLA, HP, Samsung, The quality is recognized by them. We can provide custom CNC parts for many industries.

Let’s Get Started Today

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