- Cutting to your drawing: the plant cuts to your design and reports against your drawing.
- 6,800 m² across two buildings in Hengli Town, Dongguan — production, inspection, and engineering under one roof.
- Who is legally and financially on the other side of the purchase order. The failure mode is not fraud — it is the middleman's margin on information.
- Build-to-print: we machine to your drawing and report back to it.
Why does "company" need proving rather than stating?
A company description that cannot name its registration number, its floor area, and its staff count is a description of a website, not of a business. The three facts are cheap to publish and expensive to fake.
The failure mode is not fraud — it is the middleman's margin on information. When something goes wrong on the floor, the person who knows what happened is two steps away from the person who can authorise a fix.
The practical test is whether the description could be false. Established in 2005 with 100 machines is checkable; a professional and reliable partner is not. Prefer the description that could be disproved.
Where the money is actually decided
What makes a quote accurate is a complete drawing: a 3D model for geometry, a 2D drawing for tolerances, a grade rather than a material family, and a quantity with the expected repeat quantity stated separately. The absence of any one of these is what turns a quote into an estimate.
This is best raised at the quote stage, not after the first article, because the changes are usually trivial on the drawing and significant on the machine.
What capacity actually sits behind the claim?
Capacity is depth, not a headline machine. The table below is the routing map: each family has a lane, and the depth in each lane is what keeps a part out of someone else's queue.
| Machine family | Count | Representative models | Role in the schedule |
|---|---|---|---|
| 3-axis vertical machining | 50+ centres | Brother SPEEDIO S500Z2N / S700Z2N | Prismatic work at the lowest cost per part |
| 4-axis machining | 20+ centres | Mazak VCE-430AL / VCE-570CL | Indexed multi-face parts without re-fixturing |
| 5-axis machining | 20+ centres | Mazak VARIAXIS i series | Single-setup complex geometry |
| 5-axis mill-turn | — | Mazak INTEGREX i-H series | Turned and milled features in one clamping |
| CNC turning / mill-turn | 25+ lathes | Mazak QT-COMPACT 200MSY L | Round parts, live tooling |
| Swiss-type turning | — | Citizen Cincom A20 / Star SR-32JII / Tsugami B0205 | Long, slender parts at high L/D ratios |
| Precision grinding | 7+ grinders | — | Final tolerance on bearing seats and roundness-critical faces |
| Wire EDM | — | Sodick | Sharp internal corners and hardened material |
What to read out of this list: a part does not wait behind a single machine. Depth in the same family is what lets work send work to a free machine instead of letting it wait, and it is what makes a prototype ramp to production on the same floor.
What is certified, and what is deliberately not?
Three certificates, each with a number you can check with the registrar: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En).
The IATF 16949 certificate excludes clause 8.3 (product design). That is normal for a build-to-print manufacturer and it is stated here rather than left for an auditor to discover: we cut to the drawings you provide, it does not originate the design.
What tolerance applies?
±0.003 mm on CNC milling, ±0.002 mm on CNC turning; ±0.002 mm where precision grinding or wire EDM is used, set feature by feature when we quote.
Which entity is responsible for the work?
Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39, established 2005).
How to verify a CNC precision machining supplier in an afternoon
Whether you buy from this plant or another, these checks separate a real floor from a brochure. None of them require a purchase order.
- Registered entity name and number? Ask for it in writing.
- Production address that matches the registered address? Ask for it in writing.
- Staff count and shift structure? Ask for it in writing.
- Named contact who is accountable? Ask for it in writing.
What does a quote have to state to be comparable?
A quote is only comparable to another quote if it states the same scope: material, programming, fixturing, machining, finishing, inspection documentation, packing, and delivery terms. A number without that breakdown is not a price, it is an opening position. The item most often missing is inspection documentation. Someone has to actually write the first-article report, and whether it is included changes the number.
The company's first-article discipline — eight sections
A CNC precision company's first-article discipline is the document that proves the part meets the drawing before production starts. The FAI runs on eight sections: part identification, drawing identification with the tolerance scheme (ASME Y14.5 or ISO 1101), characteristic list with every dimension and tolerance band, measurement equipment with the 10:1 ratio stated, measurement results with pass/fail status, inspector signature, quality manager signature, attachments (material cert, heat-lot, gauge R&R study). A shop that produces a real FAI on the RFQ is one whose part will pass incoming inspection; one that produces a partial FAI is one whose part may not. Your filter: ask for a sample FAI; verify the gauge's 10:1 ratio on tight-tolerance features; verify the signatures are real.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm floor, 100+ staff, 100+ machines including Mazak VARIAXIS I-600 5-axis, INTEGREX I-250H S mill-turn, TSUGAMI B0206-III / B0205-III, STAR SR-32JII / SR-32J Type N, Citizen Cincom A20-3F7 Swiss-types, Hexagon CMM with 10:1 measurement-to-tolerance per ANSI B89, temperature-controlled inspection room at 20 ±1 °C, ISO 9001:2015 116024/A/0001/UK/En, IATF 16949:2016 131941/A/0001/SM/En design clause 8.3 excluded, ISO 14001:2015 116024/B/0001/UK/En). Tolerance: ±0.003 mm milling, ±0.002 mm turning, ±0.002 mm grinding, Ppk ≥1.67, Cpk ≥1.33. Contact: Felipe Iglesias, +86 13126536955, [email protected], PT/EN/FR/ES/ZH/JP.
The company's gauge R&R study — MSA verification
The gauge R&R (Repeatability and Reproducibility) study is the verification that the inspection system can measure the part's tolerance band reliably, per AIAG MSA 4th edition. The study: the inspector measures 10 parts, 3 times each, with 2-3 inspectors, on the same gauge, in random order; the study computes the gauge's repeatability (the same inspector on the same part) and reproducibility (different inspectors on the same part). The threshold: a gauge above 30 percent of the tolerance band is unacceptable; one at 10-30 percent is conditionally accepted; one below 10 percent is acceptable. The Hexagon CMM with 10:1 meets the threshold on ±0.003 mm features (the CMM's gauge contribution is below 10 percent); a caliper does not (above 30 percent on ±0.003 mm). A company that produces the gauge R&R study on the RFQ is one whose inspection is verified; one that does not is one whose inspection is whatever the operator does.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm floor, 100+ staff, 100+ machines, Mazak VARIAXIS I-600, INTEGREX I-250H S, TSUGAMI B0206-III, STAR SR-32J Type N, Citizen Cincom A20-3F7, Hexagon CMM with 10:1, 20 ±1 °C, ISO 9001:2015 116024/A/0001/UK/En, IATF 16949:2016 131941/A/0001/SM/En, ISO 14001:2015 116024/B/0001/UK/En). Tolerance: ±0.003 mm milling, ±0.002 mm turning, Ppk ≥1.67, Cpk ≥1.33. Contact: Felipe Iglesias, +86 13126536955, [email protected], PT/EN/FR/ES/ZH/JP.
The company's quality system documentation — four layers
A CNC precision company's quality system documentation runs on four layers: the quality manual (the top-level document), the procedures (control of documents, records, internal audit, corrective action), the work instructions (shop-floor documents for setup, FAI, in-process inspection, final inspection), and the records (FAI reports, Cpk reports, gauge R&R studies, calibration records, training records). A shop that produces the four layers on request is one whose quality system is documented end-to-end; one that produces only the certificate is one whose quality system is whatever the certificate says. Your filter: ask for the quality manual's table of contents on the RFQ.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm, 100+ staff, 100+ machines, Mazak VARIAXIS I-600, INTEGREX I-250H S, TSUGAMI B0206-III, STAR SR-32J Type N, Citizen Cincom A20-3F7, Hexagon CMM 10:1, 20 ±1 °C, ISO 9001:2015 116024/A/0001/UK/En, IATF 16949:2016 131941/A/0001/SM/En, ISO 14001:2015 116024/B/0001/UK/En). Tolerance ±0.003 mm milling, ±0.002 mm turning, Ppk ≥1.67, Cpk ≥1.33. Felipe Iglesias +86 13126536955 [email protected] PT/EN/FR/ES/ZH/JP.
De-risking a first order
A trial order of a few pieces is the cheapest insurance you can buy — it proves the routing, the tolerance and the paper trail on a small batch before the volume order locks in. One floor, one quality system, one accountable party, whether the run is a single part or a full production lot, so what the trial confirms is what production repeats.
What this shop actually runs
If you ask for capability evidence, you deserve a specific answer. This facility operates 100+ CNC machines across 6,800 m2 in Dongguan, China, staffed by 100+ people. The machines, listed by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Intended for compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Intended for prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Intended for long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Intended for shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Intended for hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerance bands: ±0.003 mm milled, ±0.002 mm turned, ±0.002 mm ground or wire-cut. Capability indices: Ppk >= 1.67 at the initial study; Cpk >= 1.33 ongoing in production.
Certifications: ISO 9001:2015 (116024/A/0001/UK/En) · IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded) · ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, since 2005).
Service area: we supply Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa, with worldwide delivery from China.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Ask the four questions before you commit
Registration number, machine depth, certificate numbers, and a walk of the floor. Contact Felipe Iglesias at [email protected] or +86 13126536955. on-site and video audits are welcome.
Frequently Asked Questions
Is your IATF 16949 certificate valid for design work?
No — clause 8.3 (product design) is excluded. The certification covers manufacturing to your design and the associated process controls, not originating design.
What files do you need for a quote?
Send a 3D model (STEP or IGES) plus a 2D drawing that names the tolerances, surface finishes, material spec and any inspection or certification needs. The drawing is the contract; the model alone typically leaves the tolerance scheme open.
How quickly can you quote cnc precision machining?
Quotes are returned with a manufacturability read rather than a price alone — where a tolerance or a feature will drive cost, that is flagged at quote stage rather than after the first article. Turnaround depends on drawing completeness.
Can you work to ASME Y14.5 as well as ISO?
Yes. Both geometric dimensioning conventions are used. The important thing is that the drawing states which one applies, because the same symbol can mean different things under the two standards.
Do you hold stock or consignment for repeat orders?
On repeat orders, a forecast lets the shop hold material and, where justified, dedicated fixturing in readiness. It is a commercial arrangement rather than a standard term, worth raising at order two rather than order one.
Are you a manufacturer or a trading company?
A manufacturer. The legal entity is Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39), operating a 6,800 m² facility with a hundred-odd machines and 100+ staff in Dongguan. Factory visits are welcome.
What materials do you machine?
Aluminum, stainless steel, titanium, brass, copper, and Inconel for metals; PEEK and Delrin (POM) for plastics. Material certificates are verified on incoming stock.
Continue reading: Company CNC Precision Machining · 3 Axis CNC Precision Machining · 4 Axis CNC Precision Machining
Standards referenced on this page
- ASTM A582/A582M-12 — Standard Specification for Free-Machining Stainless Steel Bars
- ASTM B211/B211M-19 — Standard Specification for Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire
- ISO 9001 — Quality management systems — Requirements