Case Studies

Real Parts. Real Results.
Built in Our China Factory.

As a leading China manufacturer and supplier, YiguProto has delivered thousands of precision parts for engineering teams across 30+ countries. Below are real projects that show how we solve tough manufacturing problems and get your parts to market fast.

3,500+
Projects Delivered
30+
Countries Served
99.2%
On-Time Delivery
±0.005mm
Tightest Tolerance
Get a Free Quote Today Browse Cases Below
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ISO 9001:2015 Certified Factory
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DFM Report Within 24 Hours
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No MOQ — From 1 to 100,000+ Parts
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Full Material Certifications
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Secure Payment & NDA Protection
We Know Your Pain Points

Tired of These Manufacturing Headaches?

Every engineering team and product company runs into these issues. We built our service to fix them.

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Lead Times That Kill Deadlines

Local shops quote 4-6 weeks. Your launch date is in 3 weeks. Every day late costs money and market share.

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Quotes That Don't Match the Bill

You get a low quote, then hidden fees pile up — tooling charges, setup fees, finish surcharges, shipping surprises.

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Quality You Can't Verify

Parts arrive out of tolerance. No inspection reports. No material certs. You find defects on your assembly line.

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Communication Breakdowns

Emails go unanswered for days. Language barriers cause design misunderstandings. Changes take weeks to confirm.

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Vendor Lock-In for Production

Your prototyping shop can't handle production runs. Switching vendors means new tooling, new delays, new risk.

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IP and Quality Risks Overseas

You want China pricing but worry about IP leaks, inconsistent quality, and no one to hold accountable if things go wrong.

Success Stories

Real Projects from Our China Factory

Each case below shows a real challenge, our solution, and the measurable result. No fluff — just what we delivered.

Filter by:
Aerospace
5-Axis CNC Machining Titanium Ti-6Al-4V

Lightweight Titanium Aerospace Bracket

📐 ±0.01 mm tolerance ⏱ 9 days lead time 🔢 120 units

The Challenge: A European aerospace supplier needed titanium brackets that were 30% lighter than their current design. The part had thin walls (0.8mm), complex organic geometry, and required full material traceability. Their local supplier quoted 5 weeks and rejected the thin-wall geometry as "unmachinable."

Our Solution: Our engineering team used 5-axis CNC machining with custom fixturing to avoid deflection on the thin walls. We optimized tool paths to reduce vibration, sourced certified Ti-6Al-4V from an approved mill, and provided EN 10204 3.1 material certificates plus full CMM inspection reports.

The Result: Delivered 120 brackets in 9 days — 60% faster than the local quote. Parts weighed exactly 31% less, passed all load tests, and the client moved their annual 2,000-unit production contract to our factory.

Medical
Injection Molding Medical-Grade PC

Medical Device Housing — From Prototype to 10,000 Units

📐 ±0.02 mm tolerance ⏱ 15 days tooling 🔢 10,000 units

The Challenge: A US medical startup needed to scale from 10 CNC prototypes to 10,000 injection-molded housings for a diagnostic device. They needed transparent medical-grade polycarbonate, clean-room handling, ISO 13485 documentation, and a fast timeline to hit their FDA submission window.

Our Solution: We built a single-cavity prototype mold first to validate design, then moved to a 2-cavity production mold with hot runner system. Molding was done in a Class 100,000 clean room. We provided biocompatibility documentation, process validation reports (IQ/OQ/PQ), and lot traceability.

The Result: T1 samples in 12 days, production parts shipped in 21 days total. Zero cosmetic defects on the transparent PC. The startup submitted to FDA on schedule and has since ordered 50,000 additional units.

Robotics
SLS 3D Print + CNC Nylon PA12 + Al 6061

Robotic Arm Joint — 6 Iterations in 2 Weeks

📐 ±0.05 mm tolerance ⏱ 14 days, 6 versions 🔢 50 → 2,000 units

The Challenge: A robotics company needed to iterate quickly on a collaborative robot arm joint. They couldn't afford to wait 3 weeks per iteration with traditional prototyping. They also needed a clear path to production without switching suppliers.

Our Solution: We ran their first 3 design versions using SLS nylon (PA12) for fast form/fit testing — parts shipped in 3-4 days each. Once the design locked, we switched to CNC-machined aluminum 6061-T6 for functional prototypes, then set up production CNC machining with batch anodizing.

The Result: Six iterations completed in 14 days (vs. projected 18 weeks). The client launched their cobot 3 months early and our factory now supplies 2,000+ arm joints per quarter with consistent quality.

Electronics
Sheet Metal Fabrication Aluminum 5052

Outdoor Electronics Enclosure — 5,000 Units, IP67 Sealed

📐 ±0.1 mm tolerance ⏱ 18 days production 🔢 5,000 units

The Challenge: An outdoor IoT company needed weatherproof aluminum enclosures with IP67 sealing, powder coating in 3 colors, and EMI shielding gasket grooves. Their previous supplier delivered parts with inconsistent bend angles, causing seal failures in field testing.

Our Solution: We used laser cutting for precision blanks, CNC press brakes with automatic angle correction for bends, and added PEM inserts in-house. Powder coating was done in our dedicated coating line. We performed 100% dimensional inspection and IP67 water immersion testing on sample batches.

The Result: All 5,000 enclosures shipped in 18 days with zero seal failures in client testing. Field return rate dropped from 8% (old supplier) to 0.2%. The client named us their exclusive enclosure supplier for all product lines.

Automotive
CNC Turning + Milling Stainless Steel 316L

Automotive Sensor Mounting Brackets for EV Maker

📐 ±0.008 mm tolerance ⏱ 25 days PPAP 🔢 50,000 units/year

The Challenge: A major EV manufacturer needed stainless steel sensor brackets for ADAS systems. They required IATF 16949 compliance, PPAP Level 3 submission, 50,000 units annual volume, and a supplier who could respond to design changes within 48 hours.

Our Solution: We dedicated a CNC production cell with turning/milling combo machines, implemented SPC (Statistical Process Control) at every operation, and assigned a bilingual program manager. Our IATF-aligned quality system delivered full PPAP documentation including control plans, FMEA, and MSA studies.

The Result: PPAP approved on first submission. Cpk of 1.67+ across all critical dimensions. Zero PPM defects in 12 months of production. We now supply 6 sensor bracket part numbers for 3 vehicle platforms.

Semiconductor
Precision CNC Machining PEEK + Aluminum

Wafer Handling Fixture for Semiconductor Equipment

📐 ±0.005 mm tolerance ⏱ 12 days prototype 🔢 200 units

The Challenge: A semiconductor equipment company needed wafer handling fixtures made from PEEK (polyether ether ketone) with ultra-tight flatness requirements (0.005mm). The parts also required antistatic properties and zero contamination from machining residues.

Our Solution: We used dedicated CNC machines reserved for plastic precision work, applied temperature-controlled machining to prevent PEEK thermal expansion, and developed a multi-stage ultrasonic cleaning process validated for semiconductor-grade cleanliness. Every part was inspected on a coordinate measuring machine in a temperature-controlled room.

The Result: All 200 fixtures met the 0.005mm flatness spec. Residue testing showed zero particle contamination above 0.5μm. The client reports 15% less wafer breakage vs. their previous fixture supplier.

Our Process

From Your CAD File to Delivered Parts — Simple and Fast

We've streamlined every step so you spend less time managing vendors and more time moving your product forward.

1

Send Us Your Files

Upload your CAD files (STEP, STP, IGES, STL) through our quote form. Tell us material, quantity, finish, and deadline. Takes under 2 minutes.

2

Get DFM Feedback & Quote

Our engineers review your design for manufacturability within 24 hours. You get a clear, all-inclusive price — no hidden fees — plus suggestions to cut cost or improve quality.

3

Approve & We Start Production

Confirm the quote with a PO or payment. Our factory floor schedules your job immediately. You get photos and progress updates throughout.

4

Inspect, Ship & Deliver

Every part goes through QC inspection (CMM reports available on request). Parts ship via DHL, FedEx, or your freight forwarder. Tracked delivery to your door.

Industries

We Make Parts for Every Industry That Demands Precision

Our China factory and supply chain support a wide range of sectors with industry-specific quality standards and certifications.

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Aerospace & Defense

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Medical Devices

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Automotive & EV

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Robotics & Automation

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Consumer Electronics

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New Energy & Power

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Industrial Equipment

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Telecommunications

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Semiconductor

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Machine Building

What Clients Say

Trusted by Engineers and Procurement Teams Worldwide

Don't just take our word for it. Here's what buyers and engineering managers say about working with our China factory.

★★★★★

"We've been burned by Chinese suppliers before — missed tolerances, radio silence, wrong material. YiguProto is different. Their engineer actually caught a design flaw before production started, saving us thousands in rework. Our parts came in on spec, on time."

MR
Mark Richardson
Mechanical Engineering Manager, Medical Device Company — USA
★★★★★

"Lead time is everything in our EV program. YiguProto delivers production-grade CNC parts in 10 days when European shops quote 4 weeks. Quality is consistently good and their communication is fast — we get replies within hours, not days."

SK
Stefan Klein
Procurement Director, Automotive Tier 1 Supplier — Germany
★★★★★

"We started with YiguProto for prototypes and never left. They scaled with us from 5 pieces to 50,000 without a hitch. DFM feedback is genuinely useful, pricing is transparent, and the parts just work. They are our go-to China manufacturer now."

JT
James Thornton
Co-founder & Product Lead, Robotics Startup — UK
FAQ

Common Questions About Working with Our China Factory

How do I know my intellectual property is safe?
We sign NDAs before sharing any project details. Your CAD files are stored on secure, access-controlled servers. We never use customer parts for marketing without written permission. Our factory has secure production areas with restricted access for sensitive projects.
What is your minimum order quantity (MOQ)?
We have no MOQ. You can order 1 piece for prototype validation or 100,000+ pieces for ongoing production. Our factory is set up to handle both low-volume prototyping and high-volume manufacturing efficiently.
How fast can I get my parts?
CNC machined parts typically ship in 3-9 days. 3D printed parts in 2-5 days. Injection molded parts (with rapid tooling) in 10-20 days. Sheet metal parts in 7-14 days. We offer expedited service for urgent projects — contact us for rush options.
Do you provide inspection reports and material certifications?
Yes. We provide CMM (Coordinate Measuring Machine) inspection reports, material certificates (mill test reports/EN 10204), surface finish certifications, and first article inspection (FAI) reports upon request — at no extra charge for standard documentation.
What payment terms do you offer?
For new customers and prototype orders, we accept T/T (bank transfer), PayPal, and credit card. For established production clients, we can offer net-30 terms after a credit review. All payments are secured and we provide a full refund if parts don't meet the agreed specification.
Can you handle both prototyping and mass production?
Absolutely. This is one of our biggest strengths. We support rapid prototyping to validate your design, low-volume bridge tooling for market testing, and full-scale production molding/machining for mass quantities. You don't need to switch suppliers or requalify parts as you scale.

Ready to Make Your Parts a Success Story?

Send us your CAD files today. Get a free, all-inclusive quote with DFM feedback within 24 hours. No obligation, no hidden fees. Just real parts from a China manufacturer you can trust.

Get Your Free Quote Now Talk to an Engineer

✉️ sales@yiguproto.com  |  💬 WhatsApp: +86 150 1712 6694  |  📍 Dongguan, Guangdong, China