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On-Demand Parts, Quality,Fast, Feedback

Top Proto delivers precision custom parts with fast turnaround. We specialise in CNC machining, 3D printing, sheet metal fabrication, and injection moulding. From first prototype to full production built to your exact spec.

Get instant pricing, project lead times, and DFM feedback.

Accepted File Types: STEP, STP, SLDPRT, STL, DXF, X_T, X_B, IPT, CATPART, PRT, SAT, 3MF, JT

Our Services

Top Proto is your go-to provider for advanced CNC machining, delivering high-precision parts across industries. 

High-precision machining for complex geometries and intricate parts, reducing setup time and increasing accuracy.

Versatile subtractive manufacturing using rotating cutters to create custom shapes from metal or plastic blocks.
Specialized process for creating cylindrical parts like shafts and bolts using advanced high-speed lathe machinery.

Comprehensive computer-controlled manufacturing for both rapid prototyping and high-volume production runs.

Fast additive manufacturing solutions to turn digital 3D models into physical prototypes with complex internal structures.

Precision thermal cutting for sheet materials, offering clean edges and high dimensional accuracy for flat components.

Cost-effective solution for low-volume production of high-quality plastic parts of final molded products.

The gold standard for mass-producing high-quality plastic parts with excellent consistency and durability.

TOP PROTO Custom Parts Manufacturing for Your Business

Let digital engineering and manufacturing networks streamline your next project with TOP PROTO.

Deep Manufacturing Network

TOP PROTO enables you to access a single, streamlined platform for managing versatile professional collaborative relationships with certified suppliers and diverse manufacturing capabilities, allowing you to scale production to meet unlimited volume requirements.

Real-Time Quotes

Confirm transparent price structures, timelines, and DFM visibility in minutes, with the TOP PROTO quoting engine supporting optimal strategic decisions. Upload your CAD files to reduce time spent in quoting cycles.

Quality Assurance

Every part of TOP PROTO goes through rigorous inspection standards to ensure that we meet all your dimensional, cosmetic, and performance needs and requirements.

Industry-Focused Expertise

TOP PROTO works across multiple industries, including aerospace, automotive, medical, robotics, consumer, and industrial machinery, delivering consistent quality in highly demanding projects.

Made in China, Precision You Can Rely On

Located in China, our facilities are equipped with cutting-edge technology to handle everything from rapid prototyping to full-scale production. With skilled technicians and meticulous quality control, we guarantee custom plastic and metal parts delivered with speed, precision, and no middlemen involved.

300+

Machines, All Running at Peak Efficiency

0.01 mm

Ultra-Fine Tolerances Starting at 0.01 mm

1 Day

Fast Lead Times Starting from 24 Hours

50+

Materials Available for Every Project

Industry Expertise at Top Proto

With millions of parts successfully produced, TOP PROTO Machining brings extensive expertise across a wide range of applications. We specialize in industries that demand precision and complex component manufacturing. No matter the challenge, you can rely on us for exceptional quality and proven experience.

TOP PROTO Four Workflow Phases

From start to finish, our process is built for speed and clarity. Each step is transparent, keeping you in control. The result: precision results delivered on time.

Upload Your Files

Provide your CAD models or drawings. TOP PROTO offers instant manufacturability reviews and supports a wide range of file types.

Receive Automated Quotation

Select materials, processes, and finishes to receive instant, accurate quotations with lead times from our automated quoting tool.

Production Starts After Approval

Your order goes into production after you give your approval. Access updates, quality control reports, and inspection photos through Top Proto proprietary system.

You Receive Shipment

Every order you receive will include complete documentation and inspection results, all packaged securely.

What Makes Top Proto Different from Others

Instant Smart Quoting
Get quick pricing and DFM insights to optimize designs and reduce costs.
Global Supply Network
Access our global manufacturing network for reliable solutions of all sizes.
Certified Quality Control
Strict inspection protocols for every part. We ensure 100% accuracy and high standards.
Fast Reliable Delivery
Punctual shipping for all custom orders. Your projects always stay on schedule.

Choose Us for Flexible Pricing and Quick Delivery

At TOP PROTO, we know price and timeline go hand in hand. Our CNC machining services can work around your budget and deliver on your deadline. Get a quote instantly and select the service to meet your requirements.

  • Competitive pricing with quality always remains.
  • Fast lead time to complete the project quickly.

Precision You Can Trust: Our Quality Assurance Process

At Top Proto, quality is built into each step of our CNC machining services, so it is not an afterthought. From design to distribution and delivery, we incorporate extensive documentation and advanced inspection equipment to make sure all parts are made to industry standards.

Advanced Inspection Equipment
At each step of production, we have cutting-edge tools for every step and advanced technology, so we can guarantee accuracy!
Every order comes with full inspection reports, material certifications, and dimensional records. Our structured digital workflow ensures complete traceability from raw material to finished part.
Top Proto is ISO 9001 certified, reflecting our commitment to consistent quality management, continuous improvement, and delivering precision parts that meet the highest international standards.