Subcontract precision machining · Fenggang, Dongguan, China
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Semiconductor & Test

Vacuum chamber components, test-handler mechanics and clean-environment parts machined from aluminium, stainless and engineering plastics.

Semiconductor parts are judged on cleanliness, finish and dimensional honesty. Sharp edges, burrs and unsealed surfaces cause problems far downstream — often several process steps later, which is why they are expensive to discover late.

We machine vacuum-side components, probe and contact-seating parts for test handlers, and the change-kit tooling that keeps a handler running across device types. Deburring and surface finish are treated as part of the machining operation, not an afterthought, and where a feature has to be round rather than merely on size, it is finished by grinding or EDM in the same shop.

What this sector checks is finish, cleanliness and whether the part you specified is the part that ships. Those are covered by material certificates, dimensional reports and a straight answer when a feature cannot be produced to the drawing as dimensioned.

Typical parts

What we make for this sector.

Vacuum chamber and chamber-wall components

Feedthrough, flange and seal-seat parts

Electrode, plate and showerhead-type components

Probe, contact and socket bodies for test handlers

Change kits, nests and device-specific tooling

Machined engineering-plastic parts — PEEK, POM, PPS

What matters here

The four things this industry actually checks.

Surface finish

Fine finishes achieved by grinding after machining where the application requires it.

Deburring

Sharp edges removed on vacuum-facing and contact-seating geometry.

Cleanliness

Parts delivered clean and individually protected, not loose in a box.

Material honesty

The grade you specified is the grade that ships, with certificates.

Capabilities applied

Processes this sector usually calls for.

CNC Turning

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

CNC Milling

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

Gear Hobbing & Shaping

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

OD Grinding

External cylindrical grinding for roundness, straightness and surface finish.

ID Grinding

Internal grinding of bores, sleeves and bearing seats.

Wire EDM

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

Questions

What buyers in this sector ask us.

Do you sign NDAs before receiving drawings?
Yes. Send yours and we will sign it before any file changes hands. Customer names and part numbers are never published on this site.
Can you supply the documentation this sector requires?
First-article inspection reports, material certificates and dimensional reports are issued as standard, from the same facility that machined the parts. Where a sector asks for something more specific — a hardness record on heat-treated parts, a defined sampling plan, or your own report format — tell us at quotation stage and we will confirm what we can supply before you commit to anything.
Do you work from supplied castings, forgings or bar?
Yes. We machine customer-supplied material and will inspect it on receipt so that any defect is identified before we cut, not after.

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.