Custom CNC Machining in China From Prototype to
Production.
Sango makes CNC machined, injection molded, cast and 3D printed parts for engineers and product teams in the USA, Europe and Asia. Upload your CAD file, get a quote with a free DFM review, and order from one piece, with no MOQ on molding.
Four Processes. One Point of Contact.
Most projects need more than one process. A housing gets machined, the bracket gets stamped, the enclosure gets molded — and suddenly you're managing three suppliers on three timelines. Sango runs all of it in-house at our Dongguan factory and through a vetted partner network across China, so your parts arrive together.
CNC MACHINING
Milling, turning, and 5-axis work down to ±0.001" for prototypes and production.
CASTING SERVICES
Die, sand, and investment casting in aluminum, zinc, and steel.
INJECTION MOLDING
Injection molding and tooling with no MOQ; T1 samples in as little as two weeks.
3D PRINTING
SLA, MJF, SLS, and SLM for functional prototypes and low-volume parts.
What Our Clients Say About Us
We transitioned bridge tooling to full production injection molding with Sango. Fast cycle times, zero MOQ issues, and flawless part consistency.
Alex Turner
Industrial Automation VP
Rapid 3-day turnaround on precision laser-cut & bent sheet metal enclosures. Their DFM suggestions made assembly much faster on our production line.
Elena Rostova
CleanTech Hardware Director
High-pressure aluminum die-cast housings delivered on schedule. Excellent surface finish, zero porosity, and all tight bore dimensions verified on CMM.
James Chen
EV Powertrain Lead
We manufacture precision medical diagnostics equipment and switched to Sango for our multi-axis CNC milling and silicone overmolding. Over the last 18 months, they have delivered more than 45,000 components across 30 production batches. What sets them apart is their engineering communication: every CAD upload gets a thorough DFM report within hours, highlighting potential tolerance stack-ups and tool clearance risks. Their quality documentation (Zeiss CMM inspection, material certs, RoHS compliance) is immaculate and passes our FDA audit requirements without hitch. Lead times are consistent and dependable.
Dr. Marcus Vance
VP of Engineering, BioMed Solutions
Sango machined our robotic arm fixtures in 6061-T6 down to ±0.001″. Delivered in 4 days with complete Zeiss CMM inspection reports. Flawless fit.
David Miller
Senior Robotics Engineer
Their engineering team caught a critical draft angle issue during initial DFM review, saving us thousands in tooling rework. T1 samples were spot on.
Sarah Lin
Medical Device Lead
Best on-demand CNC partner we've used in Dongguan. English-speaking project managers, transparent timelines, and parts always arrive in spec.
Marc Keller
Aerospace Hardware Tech
Made in China. Delivered Where You Work.
Sango has been engineering precision motion and manufacturing solutions since 2010 — from injection molding, CNC machining, casting, and surface finishing, to gearbox and drivetrain components. Trusted by manufacturers across 50+ countries, with no middlemen and reliable, fast-turn parts shipped straight to your door.
Prototypes and Parts Made Easy
Get 5-day standard lead times on simple parts between 30 mm x 30 mm and 200 mm x 200 mm. Upload your part to see if it's eligible.
Upload CAD file
Start by choosing your preferred manufacturing process, then upload your design file.
Get a Quote
Configure material, finish, and quantity. Get pricing and free DFM feedback, then place your order.
Parts Delivered!
Once production is complete and parts pass quality inspection, they're shipped to you.
More Than Parts. A Product That Ships.
Plenty of shops will machine what you send them. Fewer will tell you the draft angle is wrong, the tolerance is over-specified, or the packaging will drop a part in transit. Sango supports the whole journey — from concept to retail-ready box.
Get the design manufacturable before it ever reaches the shop floor.
Industrial Design
Concept sketches, high-fidelity renders, and appearance specification documents that carry through to final tooling.
Mechanical Design
Detailed 2D and 3D drawings built for manufacturability, not just visual approval.
CMF Design
Color, material, and finish decisions made against real production constraints, not guesswork.
Design Cost Forecasting
Early cost modeling and cost-down recommendations before a single tool is cut.
Where Quality Meets Reliability
in Custom Manufacturing
Sango's team of engineers conducts inspections at every stage — pre-production, in-process, and final — so what leaves our factory is what you approved.
Comprehensive design for manufacturability analysis, raw material spectroscopic testing, and moldflow simulations before machining or tooling begins.
Frequently Asked
Questions.
Latest News & Engineering Articles
Stay updated with technical manufacturing insights, DFM guides, and case studies from Sango.
