Shenzhen · custom parts since 2010
Custom Machined and Fabricated Parts for OEM Projects
One drawing in. A finished, inspected, packed batch out.
Custom metal and plastic parts for European and North American OEMs. CNC milling and turning, sheet metal, 3D printing, casting and moulding run under one roof, so a prototype and the production order do not need two suppliers and two sets of tolerances.
Standard-part quotes typically take 4 working hours; complex projects may take up to 48 hours. No MOQ, one piece is fine.
Six process families, one supplier file
The reason buyers consolidate here is not price per part. It is that a design change during the prototype does not restart the conversation with a second factory.
Prismatic parts, housings and brackets milled to 1000 × 600 × 400 mm; turned parts with milled features done on a turn-mill centre so a gear blank, a flat or a radial hole does not need a second clamping. 5-axis handles impellers and sculpted surfaces in one setup.
Enclosures, chassis, brackets and frames to 1000 × 600 × 95 mm. Laser cut, formed, welded and tapped, with the same inspection and packing route as machined parts. Useful when a design turns out to be a folded box rather than a milled one.
Form and fit checks in one to three days, before spending on machining. Printed parts also cover low-volume end use where the geometry is right but the quantity never justifies tooling.
Die casting, sand casting and investment casting for volume parts, with machining of critical features afterwards. Castings get the shape cheaply; the machined faces get the tolerance.
Plastic parts where the annual volume justifies a mould, tooled and run with first-article approval before production. Metal inserts are set in the tool when the design needs threaded interfaces.
Anodizing, hard anodizing, plating, passivation, powder coating, blasting, brushing, laser engraving and heat treatment, plus light assembly. The finish thickness is accounted for in the machined dimensions instead of being discovered at fit-up.
Parts for six kinds of program
Industry pages carry the tolerances, materials and inspection evidence that program actually asks for, written for the engineer who has to defend the design review.
- Automotive, EV and autonomousSensor brackets, flanges, gears, housings
- Aerospace and aviationStructural parts, cabin parts, ground test tooling
- Medical and dentalInstrument handles, housings, prosthetics, fixtures
- Industrial automation and roboticsJoint parts, mounting plates, grippers, jigs
- Consumer electronics and lightingEnclosures, bezels, heat sinks, trim rings
- Bicycle and motorcycleHubs, mounts, clamps, carbon-adjacent hardware
From upload to dispatch
The sequence below is the same whether you send one bracket or a thousand. What changes is the batch route, not the process.
STEP or IGES for geometry, PDF or DWG for the tolerance callouts, plus quantity, material and finish. No drawing? Send a physical sample or a dimensioned sketch and the engineering team will build the model; that work carries an engineering charge, part of which is normally credited back against production.
Price, lead time and a manufacturability review: wall thickness, undercuts, thread depth, tool reach and the tolerances that are quietly driving the cost. Standard parts come back within four working hours, complex assemblies within 48. Neither the quote nor the DFM review is charged.
First article measured against the drawing, with a dimensional report and photographs of the features that matter. You approve the sample, or the process changes and it runs again. Nothing goes to volume on an unapproved first article.
Small batches run 7–15 days, volume 15–25 days depending on quantity and finishing. Sample, small-batch and volume lines run in parallel under one quality department, so a repeat order keeps the program, the fixture and the inspection plan it started with.
Finishing under the same order, final inspection to AQL or 100% on critical parts, then packing that protects finished surfaces: anti-static bag, bubble wrap, foam, carton, and a wooden case for heavy or fragile parts.
Materials we hold and machine every week
The list is drawn from what actually moves through the shop: aluminium dominates, then alloy steel, stainless and engineering plastics. Mill certificates and RoHS or REACH declarations are available on request.
| Family | Grades | Typical use |
|---|---|---|
| Aluminium | 6061, 6061-T6, 6063, 7075, 7075-T6, 5052, 2017, 518 | Housings, brackets, heat sinks, structural parts |
| Stainless steel | 303, 304, 316, 420, 302 | Shafts, fittings, medical and food-contact parts |
| Carbon and alloy steel | 1213, 12L14, 1215, 4140, 42CrMo, 45#, Q235 | Gears, flanges, shafts, fixtures |
| Copper alloys | H59, H62 brass; C51000, C52100, C54400 bronze | Electrical parts, bushings, wear surfaces |
| Titanium | TA2, TC4 (Ti-6Al-4V) | Lightweight and biocompatible parts |
| Engineering plastics | POM, PEEK, PEKK, PA, PC, ABS, PMMA, PTFE, PET, CFRP | Insulators, wear parts, transparent covers |
What arrives with the parts
Every shipment can carry the paperwork the receiving inspection needs: a dimensional report, a mill test certificate for the heat lot, and a salt spray report when a finish is specified. Customer templates are accepted, which matters when your quality system has its own form.
When something goes wrong, the answer is a rework or a remake at our cost plus the freight, duty and reasonable loss that follow from it, with an 8D report that names the root cause. Third-party inspection by SGS, BV or TÜV is welcome, and can be arranged before dispatch rather than after arrival.
Including Mazak 5-axis and turn-mill centres, Mitsubishi-controlled 3 and 4-axis machines, surface grinders, laser cutters, press brakes.
Fluent in ISO 2768, DIN and ASME drawing conventions, which is where most offshore quoting errors begin.
Sample, small batch and volume, so a 5-piece order does not queue behind a 50,000-piece run.
Before the first order
A 3D file in STEP or IGES, a 2D drawing if tolerances and finishes are called out, plus material, quantity and surface finish. If you only have a sample or a sketch, that is workable too: the engineering team builds the model first and quotes against it.
No. One piece is acceptable, and small batches of 10 to 500 run alongside volume orders. The quote shows setup and any tooling charge as separate lines, so you can see what a second unit would cost.
Standard tolerance is ±0.05 mm and high precision reaches ±0.01 mm, depending on the feature, the part size and the material. Critical dimensions should be marked on the drawing or listed at RFQ, because those are the ones the process is built around.
Yes, and most European drawings arrive that way. If a general tolerance block is missing we will ask rather than assume, because the default class changes the inspection plan and the price.
You do. We sign an NDA before quoting when asked, we do not reuse your geometry for other customers, and tooling paid for against your part number stays assigned to it.
Send the measurement and the method. If the deviation is ours, we rework or remake at our cost and cover the resulting freight, duty and reasonable loss, with an 8D report describing the correction. The inspection record shipped with the batch is what makes that conversation short.
Send a drawing for a quote and DFM review.
STEP, IGES, X_T, PDF or DWG up to 50 MB. Tell us quantity and finish, and the quote comes back with tolerance and process notes, not just a price.
From the shop notes
Longer answers to the questions these pages raise.