2 Million+
Precision parts delivered
From Prototyping to Production —— ISO 9001:2015 Certified · Dongguan, China
Precision CNC Machining & Rapid Prototyping — ISO Certified Factory in China
From rapid CNC prototypes to full production runs — Great Light Metal delivers custom machined parts in aluminum, stainless steel, and titanium to ±0.005mm tolerances. 20 years of manufacturing expertise. 3-day lead times available.
- No Minimum Order for CNC & 3D Printing
- 3-Day Prototype Lead Time Available
- CNC Tolerance up to ±0.005 mm
- ISO 9001 & ISO 13485 Certified
- NDA Available Before File Review
Upload CAD for Free QuoteAbout Great Light
One-Stop Manufacturing Solutions
What Can We Manufacture for You?
Whether you need a single functional prototype tomorrow or a bridge production run of 10,000 units, the right process is the difference between budget overrun and a successful launch. Great Light offers six integrated manufacturing capabilities under one roof — so your parts move from validation to production without supply chain gaps.
CNC Machining Services
3-axis, 4-axis, and 5-axis high-speed milling and turning. We achieve tolerances as tight as ±0.005mm across 50+ engineering materials (Aluminum, Steel, Titanium, Plastics). Get your custom parts delivered in as fast as 3 business days.
- Tolerance ±0.005mm
- Lead: 3–7 days
- From 1 piece
- Materials: Al · SS · Ti · Cu
Injection Molding & Rapid Tooling
Bridge prototyping to production with rapid tooling and custom injection molding for plastic parts. Ideal for functional validation, pilot runs, and mass production.
- Rapid tooling: 7–15 days
- Materials: ABS · PP · PC · PA · POM
- T1 samples available
- Low-volume to production runs
Sheet Metal Fabrication
Laser cutting, CNC bending, stamping, and welding for enclosures, brackets, chassis, and structural parts. Lightweight and durable sheet metal solutions from prototype to production volume.
- Al · SS · Carbon steel
- Laser cutting
- CNC bending
- Weld & assemble
3D Printing Services
Advanced 3D printing services utilizing FDM, SLA, SLS, MJF, and DMLS technologies to produce high-precision plastic and metal parts. Ideal for rapid prototyping, design validation, and functional testing, our additive manufacturing solutions deliver complex geometries without tooling, with some SLA parts ready in as little as 1 business day.
- Speed
- Precision (±0.2 mm)
- Plastic & Metal Options
- 1-Day Lead Time
Die Casting Service
High-pressure die casting for aluminum, zinc, and magnesium alloys. We specialize in mass production of complex, thin-wall precision metal parts requiring consistent dimensional accuracy at high volume. From rapid tooling to large-scale manufacturing, get high-quality cast parts with repeatable tight tolerances
- Precision
- Min 1,000 pcs
- Al · Zn · Mg · Cu
- High-volume capable
Vacuum Casting
Silicone mold casting for 20–200 part batches at injection-mold quality — without the high cost of metal tooling. This vacuum casting service is perfect for market testing, investor demonstration models, and functional pre-production validation. Achieve complex geometries with production-grade resins in as fast as 5-7 days.
- Precision (±0.05 mm)
- Injection-mold surface quality
- 20–200 part batches
- No hard tooling cost
why great light
Why Global Engineering Teams Choose Great Light
In today’s rapidly evolving market, having a trusted partner who can quickly transform innovative ideas into high-quality products is critical. At Great Light, we stand out with our exceptional expertise and unwavering commitment to your success.
⚡ 3-Day Express Lead Times
Your project shouldn’t wait. Our streamlined production workflow and advanced manufacturing infrastructure mean that standard CNC machined parts can be delivered in as little as 3 business days. For 3D printed parts, some orders ship the same day. We provide real-time order tracking so you’re never left in the dark.
🎯 ±0.005mm Precision, Every Time
Great Light operates 3-, 4-, and 5-axis CNC machining centers equipped with advanced CAD/CAM software (SolidWorks, Mastercam). Every part undergoes initial, in-process, and final inspection using CMMs, optical comparators, and calibrated calipers. We maintain surface roughness under Ra 0.8μm and provide full inspection reports on request.
🔒 Your IP is Safe — NDA on Request
We understand that your designs are your most valuable asset. Great Light is happy to sign a Non-Disclosure Agreement (NDA) before reviewing any files. All design data is stored securely, and we maintain strict internal data access controls.
✅ ISO 9001:2015 & ISO 13485:2016 Certified
Our quality management system meets the highest international standards. ISO 9001:2015 covers our overall manufacturing excellence, while ISO 13485:2016 certification demonstrates our capability to manufacture components for regulated medical device applications.
Not Sure Which Process Fits Your Part?
Upload your drawing — our engineers will recommend the optimal process and quote within 24 hours. Free DFM review included.
Upload Drawing & Get A Quote →
One-Stop Manufacturing Solutions
One Supplier. Every Process. Zero Traceability Gaps
Most manufacturers force you to manage five different vendors for prototyping, tooling, machining, finishing, and inspection. That’s five contracts, five lead times, and five opportunities for quality handoff failures. Great Light consolidates everything under one roof — and one quality system.
🏅 Dual ISO Certification — Rare in Rapid Manufacturing
Great Light is ISO 9001:2015 and ISO 13485:2016 certified, supporting quality-controlled manufacturing for industrial and medical device components. This means your medical, aerospace, and consumer parts share the same quality framework.
🔬 Free DFM Review on Every Single Quote
Before we quote, our engineers review your drawing for manufacturability issues and cost-reduction opportunities at zero charge. On average, DFM feedback saves customers 15–30% on unit cost — before a single part is cut. This is a standard service at Great Light, not an upsell.
🚚 3-Day Express Lead Time — Guaranteed for Standard Parts
Standard aluminum and steel prototypes ship in 3 business days. Production runs of 100–500 pieces typically ship in 7–14 days. DHL and FedEx express options deliver to North America and Europe within 3–5 transit days of dispatch.
🔒 NDA-Protected File Uploads & IP Security
Every customer’s files are uploaded through a secure, NDA-protected portal. Your CAD models, drawings, and design intent remain strictly confidential. We sign mutual NDA before any file exchange on request.
SIMPLE. FAST. TRANSPARENT.
From Drawing Upload to Delivery in 4 Steps
Wondering how long it actually takes to go from a CAD file to parts in your hands? Here’s exactly how every Great Light order works — no hidden steps, no surprise lead times.
📁
Upload Your Files
Submit your STEP, IGES, or STL file via our secure, NDA-protected upload portal.
2D PDF drawings welcome alongside 3D models.
Takes ~5 minutes
🔍
DFM Review & Quote
Our engineering team analyzes your file for manufacturability and returns a competitive quote — with actionable DFM feedback included at no extra charge.
Within 24 hours
⚙️
Approve & Production Starts
Once you approve the quote, your job is scheduled immediately. You receive a confirmed production timeline and can track real-time progress.
Same day scheduling
📦
Ship & Receive
Parts ship via DHL, FedEx, or UPS with real-time tracking. Most North America and Europe deliveries arrive within 3–5 business days of dispatch.
3–5 days transit
Your Industry Has Specific Requirements. So Do We.
Tell us about your part — our engineers will confirm the right process, certification requirement, and lead time for your sector.
Industries We Serve
Precision Parts for the Industries That Demand It Most
From flight-critical aerospace components to Class II medical devices and consumer electronics housings, the industries we serve have one thing in common: failure is not an option. Our dual ISO-certified quality system is built around that reality.
With 20,000+ projects delivered and a dual ISO-certified quality management system, Great Light provides reliable, high-precision solutions for both commercial and regulated industries worldwide.
Automotive
Appliance
Aviation
Electronics
Medical Device
Industrial & Robotics
IATF 16949:2016–certified automotive manufacturing services for precision-engineered automotive and electric vehicle (EV) components. We specialize in EV motor housings, battery enclosure systems, engine brackets, transmission parts, and suspension components. With a capacity exceeding 8,000+ automotive parts per month, Great Light delivers reliable solutions for both prototyping and mass production.
Great Light delivers precision Home Appliance & HVAC components, specializing in high-performance motor shafts, bearing housings, and control panel frames. From functional prototyping to mass CNC machining and injection molding, we consistently meet rigorous durability standards, exacting surface finish requirements, and extremely tight tolerance specifications.
Our capabilities include producing titanium structural parts, Inconel turbine housings, aluminum assemblies, fuel nozzles, and avionics enclosures. Backed by ISO 9001 certification, FAI in accordance with AS9102, and full material traceability. Leveraging 5-axis CNC machining and DMLS metal 3D printing, Great Light ensures tight tolerances verified by CMM inspection, meeting the rigorous safety and performance standards of the global aviation and defense sectors.
Precision components for consumer electronics including aluminum enclosures, heat sinks, PCB brackets, precision connector bodies, and RF shielding panels. We specialize in high-quality anodizing with custom Pantone colors and tight tolerances for both prototypes and production volumes.
We are ISO 13485:2016 certified for the manufacturing of high-precision medical device components, including surgical instrument parts, implant trial components, diagnostic equipment housings, and lab automation parts.
Support surgical instrument components, implant mockups, and diagnostic equipment housings using biocompatible materials (Titanium, PEEK, Stainless Steel) with strict medical industry standards for safety, reliability, and traceability.
We specialize in delivering high-precision, low-volume to production-grade medical components for global medical device manufacturers.
Robot end-effectors, actuator components, custom fixtures, precision guide rails, and sensor mounts. Rapid iteration to keep development programs on schedule.
Materials & Specifications
From Aluminum Prototypes to Titanium Production Parts
The material you choose determines machining strategy, cost, surface finish options, and lead time. Not sure which alloy is right? Our engineers provide material recommendations as part of every DFM review — at no charge.
Surface Finishing Options
The Right Finish Protects Performance — and Wins Shelf Space
Great Light provides in-house surface finishing for most standard requirements — eliminating third-party handoffs that add lead time and quality risk.
Anodizing (Type II & III)
Corrosion & wear resistance for aluminum. Type III (hard anodize) for aerospace & high-wear applications.
Electroplating
Nickel, chrome, gold, zinc. Enhances conductivity, wear resistance, and corrosion protection.
Powder Coating
Durable, uniform color finish. Excellent impact and corrosion resistance. Available in RAL and custom colors.
Passivation
For stainless steel and titanium. Removes contaminants, enhances natural corrosion resistance — essential for medical parts.
Electropolishing
Ultra-smooth surface finish for stainless steel. Reduces bacterial adhesion — standard for food-grade and medical applications.
Black Oxide / Bluing
For steel parts. Mild corrosion protection, matte aesthetic, dimensional stability — no significant build-up on surfaces.
Professional Project Support
Design & Engineering Support
Great Light offers expert technical support with a team of elite engineers and technicians, averaging over 8 years of experience, including one with 20+ years. We deliver fast, efficient solutions, personalized 1-on-1 assistance, and professional project design guidance.
Capacity
We have 150 CNC lathes and 15 CNC machining centers that can process workpieces with a maximum size of 1000mm x 500mm x 500mm and a machining accuracy of ±0.005 mm.
Equipped with 200+ advanced machines, we produce over 8,000 automotive parts monthly. ISO 9001:2015, IATF 16949:2016 & ISO 13485:2016 certified, ensuring precision, quality, and reliability in every project.
Rigorous Quality Control
- Our stringent quality control system ensures the manufacturing of top-notch prototypes and production parts.
- ISO 9001 and 13485 Certification for Manufacturing Excellence
- Adherence to Strict Manufacturing Standards
- Utilization of Advanced Facilities
Rework and Refund Policy
- If the delivered parts do not meet your specifications, contact us within five business days of receipt. We guarantee to resolve your issue within 1-3 business days.
- Genuine after-sales service, prompt and responsive customer support.
QUALITY
Our Commitment to Quality
In today’s rapidly evolving market, having a trusted partner who can quickly transform innovative ideas into high-quality products is critical. At Great Light, we stand out with our exceptional expertise and unwavering commitment to your success.
50 testing equipments
30 quality inspection engineers
20K successful cases experience
2K cooperative customers
1. Rigorous Quality Assurance
We don’t just say we’re committed to quality; we prove it. Our facility operates under a strict ISO 9001:2015 Quality Management System. We use advanced precision tools like CMM and 2D measurement instruments to ensure every single product meets your exact specifications.
2. Unmatched Expertise and Experience
Since 2005, we’ve built a reputation for excellence. Our skilled engineering team has extensive experience in rapid prototyping and manufacturing, handling complex projects of all sizes with ease and precision.
3. Reliable Global Network
Our state-of-the-art facilities and strong partnerships with global manufacturers give us an scalable production capacity for prototype, low-volume and production runs. This ensures your projects are completed on time, every time, without compromise.
3. Proven Track Record
With over 20,000 successful projects delivered to clients worldwide, we’ve earned a strong reputation for reliability and customer satisfaction.
Rapid Prototyping to SCALA
From Rapid Prototyping to Scalable Production
At Great Light, we offer a full spectrum of manufacturing solutions—starting from rapid prototyping to low-volume and on-demand production. Whether you’re in the early design validation phase or ready for scaled manufacturing, we help you bring ideas to reality with speed, precision, and quality.
Rapid Prototyping
Low-volume Manufacturing
On-demand Production
What Our Customers Say
Trusted by Engineers & Product Teams Worldwide
Our customers don’t just come back for parts — they come back because they stop worrying about quality, lead time, and supplier communication. Here’s what a few of them said:
“Great Light’s DFM feedback saved us roughly $18 per unit on an aluminum enclosure — they caught a tolerance stack-up we’d missed that would have made assembly impossible. The parts arrived in 6 days from order. We moved our entire production program to them.”
Michael R.
Senior Mechanical Engineer, IoT Hardware Startup · USA
“We needed ISO 13485-compatible documentation for a Class II medical device component. Most shops either didn’t have it or charged a premium. Great Light treated it as standard. CMM report, material certs, and full traceability — everything our regulatory team needed.”
Sophie L.
Procurement Manager, Medical Device Company · Germany
“Switched from a local shop that couldn’t quote 3-day turnarounds. Great Light hit 4 days on a titanium prototype with tight aerospace tolerances — and the first-article CMM report confirmed every dimension within spec. That’s rare. We now use them for all prototype phases.”
James K.
R&D Program Manager, Aerospace Supplier · Canada
From prototype to mass production, their team has been incredibly responsive and professional. The parts we receive are always consistent in quality and delivered on schedule. It’s been a great experience working with them on multiple projects.
David Müller – Product Development Manager
Your Next Precision Part Is 3 Business Days Away.
Upload your drawing now. Our engineering team will analyze your design, flag any cost or manufacturability improvements, and return a competitive quote within 24 hours — no commitment, no minimum order.
✅️No minimum order quantity
✅️Free DFM review included
✅️24-hour quote turnaround
✅️ISO 9001 & 13485 certified
✅️NDA available on request
Get a Free Quote NowContact Our Engineers
Frequently Asked Questions
Questions Engineers & Buyers Ask Before Their First Order
Still on the fence? These are the questions our team answers most often — answered with the technical detail that most suppliers bury in fine print.
What is the minimum order quantity for custom CNC machining at Great Light?
There is no minimum order quantity for CNC machining or 3D printing. Great Light accepts orders from a single prototype part upward. Volume pricing applies progressively from 50 pieces, with the most competitive per-unit pricing available from 500 pieces onward. For die casting, the practical minimum is 1,000 pieces due to tooling amortization economics.
What manufacturing services does Great Light offer?
Great Light provides CNC machining, 5-axis machining, CNC turning, sheet metal fabrication, 3D printing, injection molding, vacuum casting, die casting and surface finishing.
What files do I need to get a quote?
STEP, IGES, STL, DWG and PDF drawings are accepted. For tight-tolerance parts, a 2D drawing with GD&T, tolerance and surface finish requirements is recommended.
What is your typical lead time?
Standard CNC prototypes can be delivered in 3–7 business days. Lead time depends on material, tolerance, quantity, surface finish and inspection requirements.
Can you provide inspection reports?
Yes. Great Light can provide material certificates, CMM inspection reports, FAI reports and certificates of conformity when required.
Do you support low-volume production?
Yes. Great Light supports one-off prototypes, low-volume production and production runs, depending on process and part requirements.
Can you sign an NDA before reviewing CAD files?
Yes. NDA can be signed before file review to protect customer designs and intellectual property.