Subcontract precision machining · Fenggang, Dongguan, China
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Nine processes in-house +86 134 1281 0854 klauswen@mzpmachining.com
MZP MZP MachiningPrecision Parts
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+86 134 1281 0854 Request a Quote
CNC machining department at MZP Machining

Precision machined parts, built to your drawing.

Subcontract CNC machining in Dongguan, China since 1998. Turning, milling, gear cutting, grinding, EDM, tooling and moulding — nine processes under one roof, and one engineer owning your job from drawing to delivery.

Send Your Drawing — Reply in 24h See Our Capabilities
●Inspection reports with the parts ●Nine processes in-house ●Since 1998 ●English-speaking engineers

Industries we serve

Tell us your industry, and we will tell you whether we have made that part before.

Specialist buyers check industry fit before they check machine lists. Start here.

MWD/LWD electronic housings and downhole tool assembliesFocus

MWD / LWD & Downhole

Components for downhole tools, MWD/LWD equipment and surface drilling hardware.

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Semiconductor test socket with spring-probe contact arrayFocus

Semiconductor & Test

Vacuum, chamber and clean-environment components for semiconductor equipment and test handlers.

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Automated station with linear axes and safety light curtains

Automation Equipment

Machine components, gearbox parts and drive elements for equipment builders.

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Humanoid robot with articulated arms and legs

Robotics & UAV

Structural and drivetrain parts for robot arms, mobile robots and unmanned aircraft.

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Ocean sensor buoys deployed offshore

Marine & Offshore

Corrosion-resistant and sealing-critical components for marine and offshore equipment.

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Medical imaging system with patient table and C-arm

Medical & Imaging Equipment

Frames, housings and motion components for imaging systems, surgical and laboratory equipment.

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Capabilities

Nine processes, one shop, one point of contact.

Because turning, gear cutting, grinding, EDM and moulding all happen in the same building, parts that would normally travel between three suppliers stay on one datum chain.

CNC lathe turning a stepped shaft

CNC Turning

Turning, mill-turn and small-to-medium batch production of round parts.

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End mill cutting a part in a CNC machining centre

CNC Milling

3-, 4- and 5-axis milling of complex parts, pockets, contours and fixtures.

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Internal ring gear being cut on a gear cutting machine

Gear Hobbing & Shaping

Spur, helical and internal gears cut on hobbing and shaping machines.

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Cylindrical grinding of a shaft on an OD grinder

OD Grinding

External cylindrical grinding for roundness, straightness and surface finish.

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Internal grinding of a bore, small wheel on an extended spindle

ID Grinding

Internal grinding of bores, sleeves and bearing seats.

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Wire EDM machine cutting a part, operator at the control

Wire EDM

Wire EDM for sharp internal corners, hardened material and thin walls.

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Sinker EDM burning a cavity with a shaped electrode

Sinker EDM

Die-sinking EDM for cavities, deep ribs and features cut into hardened steel.

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Multi-cavity injection mould halves on the bench

Mold Making

Plastic injection moulds designed and built in-house, then maintained by the same team.

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Injection moulding machine with moulded parts on the conveyor

Injection Molding

Plastic parts moulded on presses we feed from tooling we made.

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How we work with you

Machining the part is the easy part. Making it repeatable is the job.

Any shop can produce one good sample. What decides whether a supplier is worth keeping is what happens on the second and the twentieth batch — and whether anyone tells you the truth before you commit.

DFM feedback before quoting

We review your drawing and tell you what will be difficult or expensive to make — before you have committed to anything.

Fixturing designed in-house

Workholding is designed and machined by the same people who run the job. Repeatable setups, not one-off heroics.

First article and traceability

First-article inspection, material certificates and dimensional reports ship with the parts.

One engineer, start to finish

The person who quoted your part is the person who answers when you call about it.

Materials and tolerances

What we machine, and what we can hold repeatably.

The grade you specify is the grade that ships, with certificates. Tolerance is quoted against production capability, not sample capability.

Material familyGrades we run regularlyNotes
Nickel & High-Temperature AlloysInconel 718 · Inconel 625 · MP35NWork-hardening grades. Low surface speeds and rigid setups; held to size by rigid, high-accuracy CNC turning.
Beryllium CopperC17200 (BeCu)Non-magnetic and high-strength. Common in sensor, instrument and downhole components.
Carbon & Alloy Steel1045 · 4140 · 42CrMo · 20CrMnTi · 40CrThe workhorse family. Good machinability, responds well to hardening and grinding.
Stainless Steel303 · 304 · 316L · 17-4PH · 420 · 440CShafts, sleeves and parts in corrosive or hygienic environments.
Aluminium6061-T6 · 7075-T6 · 2024 · castingsLightweight structural and housing parts. Machines fast, needs care on thin walls.
Brass & CopperH62 · C3604 · OFHC copperBearings, bushings, electrical and thermal parts.
Tool & Hardened SteelH13 · SKD11 · D2 · S136Moulds, dies and punches — usually finished by EDM and grinding.
Magnesium & TitaniumAZ31 · Ti-6Al-4VWeight-critical and high-performance parts. Quoted case by case.
Engineering PlasticsPEEK · POM (Delrin) · PPS · Nylon · PTFEMachined plastic parts where metal is not the right answer.
Castings & ForgingsAluminium and iron castings · steel forgingsWe machine and finish supplied castings and forgings.

Tolerances. We deliberately do not publish a tolerance table — a single figure per process describes a shop’s best case, not your part. We quote against what we can hold repeatably on your drawing, and we say so at quotation stage if a feature is outside that. How we handle tolerance →

Equipment and quality

The evidence engineers look for first.

What we run, and what the parts are measured on. Machine models and travel limits come with your quotation rather than sitting on a web page.

Machines

DepartmentEquipment we run
CNC turningCNC lathes and mill-turn machines
CNC milling3-axis and 4-axis vertical machining centres
5-axis / mill-turn5-axis machining centre
Gear cuttingCNC gear hobbing and gear shaping machines
OD grindingUniversal cylindrical grinding machines
ID grindingInternal grinding spindles
Wire EDMWire-cut EDM machines
Sinker EDMDie-sinking EDM machines
Mould makingMilling, grinding, EDM and fitting
Injection mouldingInjection moulding presses

Turning · Milling (3/4/5-axis) · Gear hobbing and shaping · Cylindrical and internal grinding · Wire and sinker EDM · Moulding

Inspection and documentation

  • First-article inspection. The first part of a run is measured in full against the drawing and reported before production continues.
  • Material certificates. Material is bought with certificates and ships with them on request, traceable to the heat number.
  • Dimensional reports. Critical dimensions reported with the actual measured values, not just a pass or fail.

Reports issued as standard: first-article inspection, material certificate, dimensional report.

Full equipment list Quality and inspection

Parts we have machined

Real parts, with the process that made them.

No stock photography, and no customer names — just what a machinist would want to know.

Bronze worm wheel
Bronze worm wheelGear hobbing
Internal spline ring
Internal spline ringGear shaping
Long stepped shaft
Long stepped shaftCNC turning and OD grinding

How to start

Three steps from drawing to quotation.

1
Tell us the partName, company, country and email. That is all we need to open the job.
2
Process and quantityMaterial, quantity and the date you need the parts.
3
Upload the drawingSTEP, DWG, PDF or a photo of a marked-up print. NDA available first.

An engineer — not a sales queue — reviews your drawing and replies within one working day, with a price and, where we can see one, a cheaper way to make the part.

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Straight answers

Questions buyers ask before they send a drawing.

What is your minimum order quantity?
We work from single parts upward. Most of what we make is small to medium batch work, so there is no minimum quantity you have to reach before we will quote. One-offs, spares and prototypes sit alongside production runs here.
What tolerances can you hold?
We quote against what we can hold repeatably on your specific part rather than quoting a blanket figure, because what is achievable depends on the feature, the material, the hardness, the batch size and how the part is fixtured. Send the drawing and we will state clearly what we can and cannot hold.
Can you supply material certificates and inspection reports?
Yes. First-article inspection reports, material certificates and dimensional reports are available as standard, issued from the same facility that made the parts.
How do I send a drawing securely?
Upload it through the quote form, or email it directly. If you need an NDA in place first, tell us and we will sign yours before you send anything.
How quickly will I hear back?
An engineer reviews your drawing and replies within one working day. If the job needs a longer look, we will tell you that within the same day.
Are you the factory, or a trading company?
We are the factory. Machining, tooling, moulding, inspection and shipping are all handled by us in Fenggang, Dongguan.

Machining guides

Notes from the shop floor.

Practical answers to the questions we get asked most often on quotations.

Designing thin-wall parts that hold tolerance

Where wall thickness stops being a machining problem and becomes a drawing problem.

Deep-hole drilling or boring: choosing the cheaper route

How depth-to-diameter ratio decides the process before the cost does.

Hobbing, shaping or grinding for gears

What each process is actually for, and where they overlap.

Five drawing details that quietly double part cost

The tolerances that get specified by habit and paid for on every unit.

Send us a drawing. Get an engineering answer, not a price list.

Tell us the part, the material and the quantity. An engineer reviews your drawing and replies within one working day — usually with a suggestion on how to make it cheaper.

Upload Your Drawing Talk to an Engineer