The shop behind this automotive guide — verified and quotable in one exchange
This guide's facility holds 100+ CNC machines across a 6,800 m² plant at No. 8, Shuibian Songyuan Road, Hengli Town, Dongguan, Guangdong, China 523470. Machines include the Mazak VARIAXIS I-600 five-axis, INTEGREX I-250H S mill-turn, TSUGAMI B0206-III/B0205-III and STAR SR-32JII / SR-32J Type N Swiss lathes, Citizen Cincom A20-3F7, 3-, 4- and 5-axis milling and turning centres, 5+ Sodick AQ535L wire EDM machines and a Hexagon CMM bench with 20+ gauges.
Tolerances held: ±0.003 mm milled, ±0.002 mm turned, and ±0.002 mm ground or wire-cut, verified on a Hexagon CMM with the 10:1 gauge rule on every feature. Capability indices: Ppk ≥ 1.67 initial, Cpk ≥ 1.33 in production, on key characteristics. Certifications: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded, disclosed openly), ISO 14001:2015 (116024/B/0001/UK/En), issued to Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005). Service area: 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 — based in China, delivering worldwide. Email Felipe Iglesias at [email protected] or +86 13126536955 to open a quote, and request the certificate numbers, the machine list and a past CMM report in the same message.
Cost breakdown — material, setup, cycle, and inspection quoted line by line
The cost of a CNC part is built from four lines — material, setup, cycle, and inspection — and if you read them separately, you can tell where the price moves. The material line is the bar or billet at the mill price plus the section waste; the setup line is the fixture and the first-article labour, amortised across the quantity; the cycle line is the machine hourly rate multiplied by the cutting time; the inspection line is the Hexagon CMM and the gauge work. A shop that bundles all four into a single number is hiding the assumptions; a shop that breaks them out is a shop that can be checked against the drawing. The facility behind this guide returns the four-line breakdown within one business day, with the routing and the setup count stated.
The tolerance case for the cost is the band. A ±0.1 mm band runs on a general-purpose machine with a flexible fixture and a quick inspection; a ±0.003 mm band runs on a precision machine with a rigid fixture, a temperature-controlled inspection, and a Hexagon CMM report. The facility behind this guide runs 100+ CNC machines at ±0.003 mm milling and ±0.002 mm turning and grinding, with Ppk ≥ 1.67 initial on key characteristics and Cpk ≥ 1.33 in production, under ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded), and ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005). The material certificate, the heat treatment record, the CMM report, and the certificate of conformity ship with the parts. Send the 3D model, the 2D drawing with tolerances, the material grade, the quantity, and the finishing to Felipe Iglesias at [email protected] or +86 13126536955, and ask for the four-line breakdown in the quote.
Audit checklist — entity, certificates, and floor in one email
your audit runs through the entity, the certificates, and the floor. The entity is Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005), verifiable on the National Enterprise Credit Information Publicity System. The certificates — ISO 9001:2015, IATF 16949:2016 (design clause 8.3 excluded), ISO 14001:2015 — are verifiable with the registrar URS. The floor is 100+ CNC machines including Mazak VARIAXIS I-600 five-axis and Mazak INTEGREX I-250H S mill-turn on a 6,800 m² plant in Dongguan, verifiable on a live video walk-through. Tolerance bands held: ±0.003 mm milling, ±0.002 mm turning and grinding, with Hexagon CMM and Ppk ≥ 1.67 initial and Cpk ≥ 1.33 in production. Contact Felipe Iglesias at [email protected] or +86 13126536955 to verify all three in one exchange.
Automotive machining — PPAP and the IATF 16949 chain
Automotive machining runs under IATF 16949 with PPAP submission, and the facility behind this guide holds IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded) and runs 100+ CNC machines at ±0.003 mm and ±0.002 mm on Hexagon CMM with Ppk ≥ 1.67 initial and Cpk ≥ 1.33 in production. Contact [email protected] or +86 13126536955.
- ISO 9001:2015 / IATF 16949:2016 / ISO 14001:2015. certificate numbers published and verifiable.
- Cutting to your drawing: the plant cuts to your design and reports against your drawing.
- Whether the supply relationship survives a change in volume or specification, A supplier with one machine in the relevant family has a single point of failure.
- Build-to-print: the plant cuts to your drawing and reports against it.
Why does "supplier" need proving rather than stating?
The question to ask a supplier is not what it can make today but what happens when the order doubles, or when the drawing changes at revision C. Capacity questions are really questions about queue structure: how many machines sit in the family that makes your part, and how much of their time is already committed.
A supplier with one machine in the relevant family has a single point of failure. The spare capacity in that family is what lets a part shift lanes instead of waiting in a queue when a machine is pulled for service.
Ask what share of the machine hours in your part's family is already committed. It is an unusual question and a revealing one: a supplier that cannot answer it does not know its own queue, which means the date it gave you was an estimate rather than a schedule.
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: the plant manufactures to your design, it does not originate the design.
Three things that change the price without changing the part
For a repeat part, the lever is stability rather than price: hold the revision, hold the material source, and hold the process. A supplier can usually improve a repeat part's cost once the process is settled, but only if the drawing has not moved.
This belongs in the quote discussion, not the first-article review, because the changes are usually trivial on the drawing and significant on the machine.
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.
What identifies the legal entity behind the machines?
The legal entity behind this site is Dongguan Zhuohang Ltd, founded 2005 and registered in China under Social Credit Code 91441900MA4UWT6X39, marketing under the name Zhuohang Precision Machining Factory. Its registered and production address is No. 8, Shuibian Songyuan Road, Hengli Town, Dongguan, Guangdong, China 523470.
Use the National Enterprise Credit Information Publicity System and the 18-character code to verify a Chinese manufacturer. Trading companies can produce a business licence too, yet the scope reads trading rather than manufacturing and the address is an office, not a plant.
How much capacity sits behind it?
100+ machines with depth in every relevant family. 50+ three-axis, 20+ four-axis, 20+ five-axis, 25+ turning centres, plus Swiss-type, grinding, and wire EDM.
Four checks to run on any machining services quote
Whether you buy from this plant or another, these checks separate a real floor from a brochure. None of them require a purchase order.
- Machine count in the specific family your part needs? Ask for it in writing.
- Second-source arrangement for outside processes? Ask for it in writing.
- How engineering changes are handled mid-production? Ask for it in writing.
- What happens to your slot when a larger customer expands? 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.
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.
The material sets the lead time as much as the geometry: aluminium and brass cut fast and ship in days, while stainless, titanium and Inconel machine more slowly and cost more. Name the grade on the drawing and the lead time follows the material, not the guesswork.
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). Used on 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). Used on 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). Used on 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). Used on shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Used on 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.
- Automotive routing - Brother M300X3 RD / M200X3 RD for EV motor housings and wheel bearings; SPEEDIO S500Z2N / S700Z2N for cylinder heads and crankcases; QT-COMPACT 200MSY L for shafts.
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.
Send a drawing and get a manufacturability read
Upload your model for a quote, or arrange a factory audit with [email protected] or +86 13126536955. Ask for Felipe Iglesias.
Frequently Asked Questions
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.
What is the minimum order quantity for machining services?
There is no minimum. Prototype quantities are run on the same machines as production quantities, which is what makes a later ramp a schedule question rather than a re-qualification.
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.
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 a single symbol is not interpreted identically 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.
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.
Continue reading: Machining Services · 3 Axis Machining Services · 4 Axis Machining Services
Standards referenced on this page
- IATF 16949:2016 — Automotive quality management system standard
- ASTM A582/A582M-12 — Standard Specification for Free-Machining Stainless Steel Bars
- ASTM A484/A484M-24 — Standard Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings