High-precision machining for complex geometries and intricate parts, reducing setup time and increasing accuracy.
Comprehensive computer-controlled manufacturing for both rapid prototyping and high-volume production runs.
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.
Let digital engineering and manufacturing networks streamline your next project with TOP PROTO.

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.

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.

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

TOP PROTO works across multiple industries, including aerospace, automotive, medical, robotics, consumer, and industrial machinery, delivering consistent quality in highly demanding projects.
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.
Machines, All Running at Peak Efficiency
Ultra-Fine Tolerances Starting at 0.01 mm
Fast Lead Times Starting from 24 Hours
Materials Available for Every Project
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.
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.

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

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

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

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