We Engineer Your Prototypes — Not Just Machine Your Parts
Rapid Prototyping & CNC Machining — Free DFM Review, Direct Factory
Direct Factory Savings: Free DFM review for rapid prototyping China within 12 hours — we check your design BEFORE quoting
Fast Quotes: 1 to 10,000 parts. No minimum order. ISO 9001:2015 certified.
Quick Delivery: CMM inspection report available on request. Visit our factory anytime.
12+
Years of Experience
50+
Team Members
3500+
Projects Completed
98%
Satisfied Customers
Your Trusted Partner for Rapid Prototyping in China — ISO 9001 Factory Direct
12 years of in-house CNC machining. QDJ is a direct manufacturer, not a trading company. Our 21 machines run 24/7 in our Dongguan factory — you can visit us anytime. ISO 9001:2015 certified. No middlemen, no outsourcing roulette. Your parts are made here, tracked here, and shipped from here.
Our facilities
At QDJ-PROTOTYPE, we use advanced equipment to ensure high-quality, precise products. Our machines include CNC machining centers, 3D printers, laser cutters, and quality testing tools from trusted brands like Mazak, Haas, and TRUMPF. With tight tolerance control and careful inspection, we deliver accurate prototypes and parts to meet your needs.
Rapid Prototyping China Industries We Serve — From Medical to Aerospace
Tailored Prototyping Services for Every Industry’s Unique Challenges and Needs
Medical Devices
Automotive Industry
Consumer Electronics
Education & Training
Trusted by R&D Groups Worldwide
More than 1890 companies from 96 countries trust our rapid prototyping China services, and the number is growing.
We Review Your Design Before We Quote
01
Upload a CAD File
Upload your 3D CAD file. STEP, IGES, or native SolidWorks format accepted.
02
Free DFM Review & Quote
Our engineers review your design for rapid prototyping China manufacturability. We ask technical questions before quoting — if we spot issues, you will know.
03
Order Confirmed
Confirm your order. Production starts immediately in our Dongguan factory, not outsourced.
04
Parts are Shipped
Parts shipped to your door with CMM inspection report available on request. Track your order in real time.
Engineering Problems Solved — Real Results
Every rapid prototyping project comes with challenges. Here in our China factory, we solve them. Here are a few we have helped our clients overcome. Across 3,500+ completed projects, we hold a 98% customer satisfaction rate.
5 Iterations in 3 Weeks
A hardware startup needed rapid design changes. We caught a tolerance issue in v2 that would have broken their investor demo. Result: Demo worked first try.
Read the case →DFM Review Saved $12,000
About to cut an injection mold, a product team sent us their CAD. We found interference the mold maker missed. Result: $12,000 saved.
Read the case →8 Months, Zero Issues
A German founder managed manufacturing remotely. Weekly QC reports made distance irrelevant. Result: Zero returns, zero delays.
Read the case →What Our Clients Say
5 Clients. 5 Industries. Same Answer.
★★★★★
They’re fast, communicative, and really understand startup constraints.
Hardware Startup Founder, USA
★★★★★
QDJ pointed out manufacturability issues and suggested improvements, saving us time and cost.
Product Engineer, Germany
★★★★★
They made an overseas project feel local — super responsive and helpful.
Cross-Border Entrepreneur, UK
★★★★★
They handle unusual materials and custom designs that other suppliers refused.
Maker & Creator, Canada
★★★★★
Consistent quality and reliable delivery across every batch — zero surprises.
Enterprise Procurement Lead, Australia
Latest in Rapid Prototyping
FAQ: Frequently Asked Questions
What does QDJ-PROTOTYPE make?
QDJ-PROTOTYPE is a direct rapid prototyping and low-volume manufacturing supplier in Dongguan, China, producing CNC machined, 3D printed, sheet metal and vacuum cast parts for overseas hardware R&D teams.
How quickly will I get a reply?
A free DFM review within 12 hours of receiving your 3D model and drawing, and an itemised quotation within 24 hours. Neither commits you to ordering.
What is the minimum order?
One part. Quantities from 1 to 10,000 are quoted on the same process and quality system, so a validated prototype can move into bridge production without changing supplier.
How do I know the parts will match the drawing?
Each shipment is accompanied by a CMM inspection report, so measured values can be compared against the drawing. Material certificates are available on request.
Are you a factory or a trading company?
A direct manufacturer, not a trading company. Production runs at our manufacturing partner in Dongguan with 50+ CNC machines and an ISO 9001:2015 quality system; the certificate holder is disclosed on request.