Precision CNC machining · Shenzhen, China · since 2013
We machine the parts other shops turn away.
Custom CNC machining service for thin walls to 0.3 mm, high-performance polymers, 5-axis geometry and nickel alloys. If your drawing is hard to hold, it is exactly what we make best, to ±0.005 mm with a CMM report on every critical surface.
ISO 9001:2015 · ISO 13485:2016 · AS9100D · D-U-N-S Registered
00 · How we work
A custom precision machining partner, not a catalog vendor
An engineer reads your drawing before it is priced
Quotes here do not go into a queue. An engineer opens your files, checks the tolerance stack and the material condition, and replies within 24 hours with a price, a route, and the manufacturability notes that save money later. The same shop has run this way since 2013: 100+ CNC machines including 11 five-axis centers, 40+ precision inspection instruments, and 100+ people on two shifts in Shenzhen.
One supplier owns the whole route
Machining, heat treatment coordination, surface treatment and final inspection sit under one quality system, so your part is not passed to a subcontractor you have never heard of. There is no minimum order: a single prototype runs on the same process chain as the volume batch that follows it. Files stay inside our factory and NDAs are routine. We hold 177 customer records in our CRM across 19+ countries, and most of them reorder, which is the number we actually watch.
01 · Industries
The sectors that ask for the hardest parts
We machine core precision components for semiconductor equipment, aerospace groups and robot makers, plus the medical and energy systems around them. Pick a sector to see the parts, materials and tolerances we hold there.
Robotics & Humanoid Robots
Joint arms and housings to 0.01 mm coaxiality, sampled on a scheduled window for humanoid and collaborative robot programs.
See what we machine for robotics & humanoid robots →
Medical Devices
ISO 13485 thin-wall surgical and implant-grade components, finished to Ra 0.8 with full lot traceability.
See what we machine for medical devices →
Aerospace
Nickel-alloy and PEI fluid parts under AS9100D, cut from solid stock to sealing-grade accuracy.
See what we machine for aerospace →
Semiconductor & Optics
Lens barrels and thin-wall frames holding sub-0.01 mm alignment for lithography and optical equipment.
See what we machine for semiconductor & optics →
General Industrial Components
Precision components across automation, energy and general industry, from 1-off to volume.
See what we machine for general industrial components →02 · Materials
Six material families, machined to spec
Every family is clickable to a machinability guide with the grades, feed advice and finishes we can hold.
Aluminum
6061, 6082, 7075, 2024, 2219-T851 and MIC-6 cast plate for lightweight structural, robotics and enclosure parts, anodize ready.
Stainless steel
303, 304, 316L, 17-4PH, 420 and 440C with passivation and controlled work-hardening for corrosion service.
Titanium
Gr2, Gr5 (TC4) and Gr23 ELI for aerospace fittings and surgical instruments, with full lot traceability.
Copper & copper alloys
C36000 free-cutting brass, C11000 copper and C172 beryllium copper for conductive, thermal and RF parts.
Carbon & tool steel
1045, 4140, 4340, P20 and H13 with heat-treatment routes for molds, fixtures and wear parts.
PEEK, PEI & engineering plastics
PEEK, PEI (Ultem), POM, ABS, PC, nylon and PTFE machined to tolerances printing and molding cannot hold.
03 · Surface treatment
Eight finishing routes, one quality system
Anodizing, passivation, heat treatment, plating, polishing, powder coating, black oxide and laser marking, selected by the problem they solve, with masking and post-coat verification planned by us.
Anodizing
Type II and Type III per MIL-A-8625, clear or black.
Passivation
Nitric or citric per ASTM A967 for stainless and titanium.
Heat Treatment
Stress relief, aging and hardening inside the machining route.
Electroplating
Zinc, nickel and hard chrome, size planned before plating.
Polishing
Mechanical and electrolytic, Ra 0.8 down to 0.2, verified.
Powder Coating
RAL colors with masking of threads and grounding faces.
Black Oxide
AMS 2485 for steel with oil seal, about 1 μm growth.
Laser Engraving
Serials, data matrix and logos per MIL-STD-130, in house.
04 · Capabilities
How a drawing becomes a verified part
One company with full control of the route. Seven processes under one roof, and the equipment to hold them.
Send 2D/3D files (STEP, DWG, PDF); an engineer reviews them directly.
Price and lead time for your tolerance and batch size, with manufacturability feedback.
Process planned to the material; 5-axis, turn-mill, EDM as the geometry needs.
CMM report and material certificate travel with the part to 19+ countries.
5-Axis Milling
Complex geometry, one clamping, 11 Mazak centers.
CNC Milling
3-, 4-axis and horizontal milling for housings and brackets.
CNC Turning
Live-tooling lathes for round parts and 0.3 mm thin walls.
Turn-Mill Machining
Rotational and milled features in one setup.
Low Volume Production
1 to 1000 pieces without tooling, batch price in steps.
Prototype to Production
NPI route from design support to packaged volume batches.
Rapid Prototyping
Functional prototypes in 7 to 15 days.
Sheet Metal
Laser cut, bend, weld and finish enclosures and brackets.
Case studies with CMM data Full capability route → Tolerance standards
05 · Insights
From the shop floor, with numbers
Engineering stories and process notes written by the team, not marketing copy. Read the method, then send the drawing.
CNC Machining for Oil and Gas Parts: What Wellheads and Auditors Actually Require
How pressure retaining parts are actually machined and released: the stainless, duplex and nickel alloy list behind wellhead and pipeline hardware, why sealing faces and premium threads get their own rules, what an EN 10204 3.1 documentation pack contains, where turn mill and five axis setups cut cost, and how sour service changes the plan.
oil and gas · cnc machining · wellhead · nace mr0175 · traceability
Read more →
Laser, Waterjet, or CNC Machining? Choose by Thickness, Tolerance and Edge
A practical comparison of fiber laser, abrasive waterjet and CNC machining: what each process can and cannot make, why the tolerance gap is structural rather than a matter of operator skill, how edges and heat affected zones change the decision, and the hybrid cut blank plus machining route that wins on large flat parts with local precision.
cnc machining · laser cutting · waterjet · process selection · dfm
Read more →
CNC Machining for Farm and Earthmoving Equipment: Fits and Wear Life
A working guide to machined components for tractors, harvesters and earthmoving machines: the fit arithmetic that decides whether a spare part still installs in year eight, what sealing bores actually need beyond diameter, which steels survive dirt and fertilizer, and how large housings hold position across half a metre.
agriculture · heavy machinery · cnc machining · hydraulics · wear parts
Read more →06 · Quality
Quality you can audit, not just claim
Independently certified quality systems, on a floor with 40+ precision inspection instruments.
07 · FAQ
Questions buyers ask before the first order
Straight answers on quoting, MOQ, certificates, RoHS and REACH compliance, tolerances and lead times. More detail on the full FAQ page.
What do you need to quote my part?
Send 2D/3D files (STEP, DWG or PDF), the material, quantity and any tolerance or surface callouts. An engineer reviews the drawing and returns a quote with manufacturability feedback within 24 hours.
Is there a minimum order quantity?
No. We quote from a single prototype to volume production, and small lots run on dedicated machines so they never wait behind volume schedules.
Which certifications does KGL hold?
ISO 9001:2015, ISO 13485:2016 for medical devices, and AS9100D audited by Bureau Veritas. We are also D-U-N-S Registered with Dun & Bradstreet.
Do you provide material certificates and inspection reports?
Yes. Every part ships with full material traceability and a CMM report on critical surfaces. First article inspection per AS9102 is available on request.
Which countries do you ship to?
Parts ship to 19+ countries, mostly in Europe, North America and Israel, which account for about 70 percent of revenue. We ship DHL, FedEx, air or sea, with DDP available.
Do your parts and finishes comply with RoHS and REACH?
Yes. Materials and surface treatments are selected for RoHS and REACH compliance, and declarations are available on request.
How do you guarantee tight tolerances?
The standard is ±0.005 mm on high-performance polymers and 0.01 mm GD&T on metal parts. 40+ precision inspection instruments, including Hexagon CMMs with 0.0015 mm accuracy, verify every critical dimension before shipment.
How fast can you deliver samples?
Expedited sampling runs on active robot programs; typical prototypes take 7 to 15 days, and production batches 2 to 4 weeks depending on quantity and complexity.
08 · Contact
Send the drawing. Get a quote in 24 h.
No MOQ for prototypes and small lots. Email your 2D/3D files and an engineer will reply.
Need a fast quote?
Send your 2D/3D drawings. DFM feedback within 24 hours. No MOQ for prototypes.
- expedited prototype sampling scheduled per order
- +/- 0.005mm standard tolerance
- 99.5% first-pass yield
- Direct engineer communication