Precision CNC Machining
Factory in China
Get custom metal and plastic parts directly from our CNC machining factory in Dongguan, China. Work with English-speaking engineers on milling, turning, finishing and inspection requirements. Send complete drawings and specifications for a quotation, typically within 24–48 hours, including a free DFM review.
Direct Factory · Not a Trading Company
Precision CNC Machining From Our Factory in China
Davantech is an ISO 9001:2015 certified CNC machining factory in Dongguan, China, serving OEMs since 2012. We supply metal and engineering-plastic parts to customers in Europe, North America, and Australia, from prototypes to repeat production. You work directly with the team coordinating machining, partner-managed finishing, inspection, and delivery, with no trading-company markup. Compare our capabilities, costs, quality documentation, and supplier-qualification checks below to assess whether we fit your project. New to ordering from China? Start with our step-by-step guide to ordering CNC parts from China.
Services
Our China CNC Milling and Turning Services
We perform core CNC processes in-house, with qualified partners for additional capacity and specialist operations, managed and inspected by Davantech. For process specifications, material options, tolerances, and equipment details, see our CNC Machining Services page. Need an instant price estimate? Upload your CAD file to our instant CNC machining quote calculator.
CNC TURNING
High-precision turning for shafts, fittings, bushings, and connectors. Live tooling enables milled features in one setup.
- ±0.01 mm critical diameters; ±0.005 mm on request
- Ra 0.4 – 1.6 μm finish routine
- Brass, stainless, aluminium, POM
CNC MILLING
3-axis and 4-axis precision CNC milling in China for prismatic parts, enclosures, manifolds, and complex 3D geometries up to 1.8 m long.
- ±0.01 mm on specified critical dimensions
- 60+ milling machines
- Up to 1.8 m capacity
WIRE CUTTING
Wire-EDM for small internal corner radii, hardened conductive materials, and intricate profiles that conventional milling cannot produce. The achievable radius depends on wire diameter and cutting allowance.
- Profile tolerances ±0.01 mm
- Hardened & tool steels
- Small internal corner radii
DRILLING, TAPPING, REAMING
Secondary operations integrated into the milling and turning process. ISO metric and imperial threads. Reaming for press-fit and bearing tolerances.
- M2 to M48 tapping
- H7 reamed bores
- Counterbore & countersink
SURFACE TREATMENTS
Type II & Type III hard anodising, electroless nickel plating, zinc, passivation, powder coat, black oxide. Managed under our QMS.
- MIL-A-8625 anodising
- RAL colour matching
- Salt-spray-tested coatings
ASSEMBLY & MOLDING
As your project scales, the same factory handles insert molding, overmolding, and final assembly, no new vendor qualification needed.
- Insert molding
- Overmolded cables & connectors
- Mechanical & PCB assembly
Materials, Tolerances & Equipment
Use these capabilities to assess your part before requesting a quote. Specialist alloys, engineering plastics, and tighter tolerances are reviewed against your drawing. Identify critical dimensions, fits, and finished-surface requirements so feasibility can be confirmed at quotation.
- Aluminium 6061-T6, 7075-T6, 2024, 5052, 6082
- Stainless steel 303, 304, 316L, 17-4 PH
- Carbon & alloy steel 1018, 1045, 4140, 4340
- Brass & copper CW614N, C360, CuETP
- Plastics PEEK, POM, PA6/66, PC, PTFE, PMMA
- Standard tolerance ISO 2768-m
- Critical dimensions ±0.01 mm
- Turned diameters ±0.005 mm on request, geometry/material dependent
- Position ±0.02 mm across faces
- Surface finish (turned) Ra 0.4 μm routine
- Surface finish (milled) Ra 1.6–3.2 μm; confirm on drawing
More on tolerances explained and design guidelines.
- 3-axis milling 40+ machines
- 4-axis milling 20+ machines
- Max milled length 1.8 m
- CNC lathes (live tooling) 15 machines
- Multi-spindle screw Available
- EDM & wire-cut Yes
Full materials list, tolerance tables, and process detail: CNC Machining Services →
Who Sources CNC Machined Parts From Our China Factory
We supply precision CNC machined parts to OEMs and engineering teams across six major industries, from single prototypes to high-volume annual production contracts.
- Sensor housings & connectors
- Hydraulic & pneumatic fittings
- Precision shafts & bushings
- Hard-anodised actuator parts
- Electronic enclosures
- Anodised heat sinks
- Nickel-plated EMC shields
- PCB spacers & standoffs
- Surgical instrument bodies
- Passivated stainless parts
- Fluid handling fittings
- Aluminium structural brackets
- Wire-EDM profile parts
- Precision manifold bodies
- Valve bodies & fittings
- Precision gears & shafts
- Ground & lapped seal faces
- Pump & compressor parts
- RF connector components
- Antenna mounting hardware
- Zinc-plated steel enclosures
- IoT sensor probe bodies
Independently Audited Quality System
Our quality management system is audited annually by an accredited third-party certification body. The certificate is current, the scope covers the full production process, and customers and prospects can request the PDF for verification.
Certificate available on request. Audited annually by accredited third-party certification body.
Cost Comparison China vs Europe vs US
Indicative pricing for the same standard precision part, sourced directly from an ISO 9001:2015 certified CNC machining factory in China. Savings are largest on labour-intensive parts (multi-setup milling, manual finishing) and smallest on raw-material-dominated parts (large billets, exotic alloys). For a deeper breakdown of how CNC machining cost is built up, see how much CNC machining costs.
| Europe | United States | Davantech (China) | |
|---|---|---|---|
| Relative unit cost | High (baseline) | Highest | 30–60% lower |
| Prototype lead time | 10–20 days | 7–15 days | About 15 days |
| ISO 9001:2015 | Common | Common | Yes, certified |
| DFM support | Varies | Varies | Included free |
| Volume scalability | Moderate | Moderate | High |
Methodology: based on quotations Davantech prepared for European and US OEMs in 2024–2025, compared against quotes those customers shared from their incumbent local suppliers for the same drawing, material, tolerance, and quantity. Send a drawing for a like-for-like comparison.
Three Real-World Cost Examples
Actual production runs from Davantech in the last 12 months. Drawings, tolerances, and materials available on request under NDA.
| Part | Process | Qty | Davantech | Typical Western | |
|---|---|---|---|---|---|
 |
Aluminium 6061 enclosure (70×35×25 mm) | 3-axis milling | 200 | $4.10/pc | $9–12 (US) |
 |
Stainless 304 coupling (turned + threaded) | Turning | 500 | $1.90/pc | €4–6 (EU) |
 |
PA6 mounting block | Milling | 1,000 | $3.50/pc | €7–10 (EU) |
Factory vs Trading Company
When comparing a CNC factory with a trading company, establish who makes the parts, who controls inspection, and who resolves non-conformances. Ask which operations are performed in-house and which use partners. The answers help you compare price, traceability, and accountability on the same basis.
| Trading Company | Direct Factory (Davantech) | |
|---|---|---|
| Owns production equipment | ✗ No | ✓ Yes |
| Single physical address | ✗ Often no | ✓ Yes, auditable |
| Direct contact with engineers | ✗ Through sales | ✓ Direct |
| Quality consistency batch-to-batch | Variable | ✓ Same QMS every order |
| Pricing structure | Factory cost + 15–35% margin | Direct factory cost |
| Accountability if parts fail | Disputed between trader and factory | Single point of accountability |
| DFM review at quote stage | Rarely | ✓ Free with every quote |
| Customer factory audits | Often refused | ✓ Welcome |
How to test: ask any Chinese supplier for a video walkthrough of their machine shop with company signage visible. Ask to see the machines relevant to your parts and discuss any partner-managed processes. Agree a suitable time for the call; a response deadline alone does not establish whether a supplier owns a factory.
CNC Machining: China vs Europe vs USA vs Vietnam vs India vs Eastern Europe
Where should you actually source precision CNC machined parts in 2026? Here is how the realistic options compare across the factors that matter for engineering buyers.
| China | Europe | USA | Vietnam | India | Eastern Europe | |
|---|---|---|---|---|---|---|
| Relative unit cost | 30–60% below West | High | Highest | Low | Lowest | Mid |
| Prototype lead time | About 15 days | 10–20 days | 7–15 days | 10–14 days | 10–14 days | 7–10 days |
| Supply chain depth (materials, tooling, finishing) | Deepest globally | Strong | Strong | Limited | Mid | Mid |
| Precision CNC machine population | Largest globally | Strong (DE, IT, CH) | Strong | Small but growing | Mid | Mid (CZ, PL) |
| English engineering communication | Variable (good at premium suppliers) | Good | Native | Limited | Strong | Good |
| ISO 9001:2015 penetration | High (at qualified suppliers) | Universal | Universal | Mid | High at top tier | High |
| Air-freight to EU (door-to-door) | 3–8 working days | Same-day to next-day | 3–4 days | 3–5 days | 3–5 days | 1–2 days |
| Sea-freight to EU | 6–8 weeks | N/A: overland | 14–18 days | 28–35 days | 22–28 days | 3–5 days truck |
| US Section 301 tariff exposure | Yes (~25%) | Low (some) | N/A: domestic | Low | Low | Low (some) |
| Best for | CNC machining, partner-managed finishing and assembly in one order; cost-sensitive programmes | EU customers needing fastest turnaround; high-regulation work | US customers avoiding tariffs; defence-restricted parts | Lower-complexity; high-volume | English project management; software-adjacent hardware | EU short-lead small batches |
Bottom line: Europe and the USA win on lead time and zero-friction logistics for their respective regions, but cost typically runs 2–3× a Chinese direct-factory equivalent for the same precision part. Vietnam and India are lower on labour but lack China's supply chain depth, which often makes Chinese landed cost lower despite higher hourly rates. Eastern Europe is competitive specifically for EU customers wanting one-day truck delivery.
Where Outsourcing to China Goes Wrong
Pretending the risks don't exist helps no one. The four failure modes we see most often when customers come to us after a bad experience with another Chinese supplier, and how Davantech is structured to avoid each.
Six Red Flags When Evaluating a Chinese CNC Supplier
If you spot any of these during the quoting or qualification phase, slow down. Each calls for further evidence about the supplier, production controls, or communication expected by a Western OEM. For more, see our take on how to find the right CNC supplier in China.
- Quote arrives within an hour, no questions askedFor a complex drawing, check whether the quote addresses tolerances, material grade, surface finish, and secondary operations. A fast estimate can be useful, but ask which assumptions need engineering review before the price and delivery date are confirmed.
- Refusal or delay on a video factory tourAsk for a live shop-floor walkthrough with company signage and the relevant production equipment visible. Scheduling delays alone prove little; repeated refusal to provide verifiable production evidence deserves closer investigation.
- ISO certificate cannot be verifiedCheck the legal company name, site address, scope, certificate number, and validity dates. Verify with the issuing certification body if an online search is inconclusive; a missing database entry alone does not prove a certificate is invalid.
- No mention of First Article InspectionAgree how the first part will be inspected against the drawing, which results you receive, and when batch production can proceed. Confirm any inspection charges before ordering rather than assuming that every supplier includes the same checks.
- Sales contact cannot answer technical questionsTest it: send a question that requires actual engineering judgement. Check whether the response addresses your actual tolerance, material, or process question, and whether you can speak with the responsible engineer. Response quality and access matter more than a fixed reply deadline.
- No written non-conformance policy"We'll discuss it" is not a policy. Get the rework / replacement / root-cause-analysis policy in writing in the supplier agreement.
How to Qualify a CNC Factory in China
A six-point checklist for comparing any Chinese supplier, including us. If a factory cannot demonstrate all six, walk away. We've also published a downloadable CNC supplier audit checklist (Excel, ISO 9001-aligned) for engineers running formal supplier audits.
CNC Machining China Frequently Asked Questions
The questions sourcing managers and engineering leads ask us most often. Have a question that isn't here? Send it over.
Is CNC machining in China reliable for Western OEMs?
How much can I save by outsourcing CNC machining to China?
What is the minimum order quantity at Davantech?
How long does shipping CNC parts from China take?
How is my IP protected when sending drawings to China?
Can I visit the factory?
Is China still cheaper than Vietnam, India, or Eastern Europe for CNC machining?
What happens if parts arrive that don't meet my drawing?
Are you actually a factory or are you a trading company?
What payment terms do you offer?
How do US tariffs on Chinese imports affect pricing?
Do you supply regulated industries like medical and aerospace?
Why Davantech, Not Just Any Chinese Factory
Many factories in China can quote your drawing. A much smaller number can deliver consistently to Western OEM standards. Here's what's specific to us.
- Belgian Engineering Management: On-Site, Full-TimeNot a representative who flies in once a quarter. European leadership manages production daily, ensuring Western quality standards are applied consistently, not just when an audit is scheduled.
- Supplying European and North American OEMs Since 2012We review your drawing revision, specified fits, critical dimensions, and inspection requirements before production. General tolerances apply only where the drawing does not specify a tighter requirement.
- Single Factory, Single Point of AccountabilityCore machining and assembly run in-house. Fixed partners provide additional capacity and specialist processes under NNN agreements, with production coordination and inspection managed by Davantech.
- One Supplier for CNC + Insert Molding + Overmolding + AssemblyAs your project scales from machined prototypes to assembled finished goods, you don't requalify a new vendor at every stage. One PO, one quality system, one shipment.
Ready to Get a Quote?
Send your 3D files, revision-controlled 2D drawings, material, finish, quantities, and target delivery date. Identify critical dimensions and required inspection records. We typically respond within 24–48 hours after receiving complete requirements with:
- A free DFM review flagging any producibility issues
- A detailed quote with cost breakdown
- Recommended lead time and shipping method
- An NDA, signed before review, if you want one