Strict Supply Chain Quality Control
Unionfab's owned facilities and qualified production partners are reviewed for process capability, material control, quality performance, and delivery reliability before they enter the order flow.
QUALITY CONTROL
Quality is the foundation of every Unionfab order.
Unionfab turns quality control into a structured, inspection-driven workflow, backed by 20+ years of Uniontech manufacturing experience, so prototypes and NPI bridge production ship with confidence.
100%
Pre-shipment Inspection
< 0.3%
Quality Complaint Rate
ISO
9001, 14001, 13485, 27001
IATF
16949
End-to-End Quality Assurance
We believe a complete process is the most effective way to protect part quality.
Professional Engineering Review
Before manufacturing, engineers review drawings, tolerances, geometry, material, finishing notes, and manufacturability risks, then communicate optimizations before production starts.
Controlled Production Process
Parts are produced according to an approved process route. First article inspection can be provided before batch production, with patrol checks during production to keep each operation on track.
100% Final Inspection Before Shipment
Unionfab's quality team checks finished parts before shipment against order requirements, drawings, visible appearance, quantity, packaging, and required inspection documentation.
Quality Inspection Equipment
ZEISS CONTURA CMM
Coordinate measurement for critical dimensions and GD&T features.
KSCAN20 3D Scanner
Full-surface capture for complex geometry and deviation review.
Mitutoyo Height Gauge
Height, step, datum, and production patrol inspection.
TZTEK Vision System
Optical inspection for fine features and profile dimensions.
ZEISS ACCURA CMM
Coordinate measurement for critical dimensions and GD&T features.
Quality Inspection Reports
Unionfab separates inspection into default checks, free request-based checks, and paid advanced metrology, so expectations are clear before production starts.
Default checks
- XYZ / linear dimensional inspection for both 3D printing and CNC machining
- Appearance and surface quality review before shipment
- Spot check form tolerance, in-process dimensional monitoring, burr and sharp edge checks
Free on request
- Thread / fastener Go/No-Go, assembly fit, seal integrity, and post heat treat hardness where applicable
Paid add-ons
- Advanced testing such as tensile, hardness with sample prep, metallography, density / porosity, X-ray, CMM GD&T, and 3D scanning
Company Certifications
ISO 9001
ISO 13485
Top 100 Certificate
Other Certifications
Trusted by Global Customers
4.7 / 5
Joel (PAWS Founder)
★★★★★
"Quick, efficient and high quality results. The company produced the correct materials in a high quality-precision manufactured and in a large quantity with amazing consistency. Above those facts, they provided timely updates and communicated along the way. We will use Unionfab in the future and recommend them to other companies too!"
Sean S.
★★★★★
"Trustworthy. The price of my 3d print was very competitive. Arrived about 10 days after submitting the 3d file (from China). The prints were high detail resin, and I'm very satisfied with the quality. Will definitely have them print more in the near future. Sent via UPS with tracking."
Looi
★★★★★
"Unionfab is great! I use Unionfab's 3D printing services to create metal sculptures that aren't otherwise possible. They always give feedback to make sure the design is optimized for printing, and their website keeps a great timeline of my projects from start to finish. They're very communicative, prices are reasonable even for metal printing services."
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Unionfab is China's Largest 3D Printing Manufacturing Company for Rapid Prototyping and On-Demand Production Parts.
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沪ICP备17023219号-3Region: -, Version: 26.09.18
沪ICP备17023219号-3Region: -, Version: 26.09.18
