ISO 9001 · IATF 16949 · ISO 13485

Real Metal. Real Precision.

Your offshore precision manufacturing department -- 20+ years of CNC excellence from the Greater Bay Area. From 1-piece prototyping to 1,000,000+ volume production, with ±0.005mm tolerance control and 4-hour engineering quotes.

Request a Quote Our Capabilities
800+ Global Clients
100K+ Projects
$60M+ Assets
20+ Years
Equipment
600+
Advanced production units -- 450+ CNC from Mazak, Citizen & Tsugami
Tolerance
±0.005mm
CMM verification and full QC traceability on every order
Facility
50K+
Square meters modern manufacturing -- Greater Bay Area, China
Quote Speed
4hr
Engineering quote turnaround with DFM review from 80+ engineers
Core Services

Precision
Machining

Two flagship machining capabilities -- engineered for complex geometries and micro-precision components, all under one roof.

Precision CNC Milling -- 5-axis machining center in operation
CNC Milling
3-Axis 4-Axis 5-Axis

Precision CNC Milling Services

100+ multi-axis milling centers -- including 3, 4, and 5-axis units from Mazak and Brother -- tackle the most demanding geometries with repeatable ±0.005mm accuracy. From single prototypes to high-volume runs, our DFM engineers optimize every toolpath for cost and precision.

  • 100+ milling units -- Mazak, Brother, high-speed VMC/HMC
  • Aluminum, titanium, Inconel, stainless steel, engineering plastics
  • Ideal for aerospace, robotics, optical housings, and structural parts
Get a Milling Quote
Custom CNC Turning -- Swiss-type turning center producing precision parts
CNC Turning
Swiss-Type Ø0.5-32mm 350+ Units

Custom CNC Turning Services

350+ Swiss-type CNC turning centers from Citizen and Tsugami, specializing in high-precision turned parts from Ø0.5mm to 32mm. Sliding-headstock machines excel at long, slender components demanding exceptional roundness -- the go-to for medical, optical, and micro-precision applications.

  • 350+ Swiss turning units -- Citizen and Tsugami sliding-headstock
  • Roundness ≤0.002mm, Ra surface finish down to 0.4μm
  • Ideal for medical implants, camera shafts, connectors, and fasteners
Get a Turning Quote
Technical Reference -- Tolerance Comparison

Select the right process for your application requirements.

Specification
CNC Milling
3 / 4 / 5-Axis
CNC Turning
Swiss-Type
Linear Dimensional
General machined features
 ±0.005mm
Std: ±0.02mm
 ±0.005mm
Std: ±0.01mm
Roundness / Cylindricity
Circular cross-section accuracy
 ≤0.005mm
Bored / circular milled
 ≤0.002mm
Superior on rotational parts
Surface Roughness (Ra)
As-machined finish
 0.8μm
Down to Ra 0.4μm
 0.4μm
Down to Ra 0.2μm
Part Geometry
Optimal part shape
 Prismatic & Complex
Pockets, slots, contours
 Rotational & Slender
Shafts, pins, bushings
Part Size Range
Typical workpiece envelope
 5-800mm
Up to 1,200mm on large VMC
 Ø0.5-32mm
Swiss-type range
Best For
Recommended applications
Aerospace Robotics Optical Housings
Medical Connectors Optical Shafts

* All tolerances verified by CMM under standard LOM production conditions. Actual achievable tolerance depends on part geometry, material, and feature complexity.

Start Your Project

From Drawing To Delivery.

Upload your STEP, IGES, or DWG files and receive a detailed engineering quote -- including DFM feedback, material recommendations, and lead time -- in as little as 4 business hours.

No MOQ restrictions · NDA available · PPAP Level 3 support

800+
Global Clients
100K+
Projects Done
4hr
Quote Speed
±0.005mm
Precision
Request a Quote All Capabilities
ISO 9001
IATF 16949
ISO 13485
PPAP Lvl 3
Materials & Finishes

What We
Work With

Aluminum alloy CNC machined parts
Most Popular
Aluminum Alloys

Lightweight.
High-Strength.

Our most-requested material family. 6061-T6 offers excellent machinability and corrosion resistance for general-purpose components. 7075-T6 delivers aerospace-grade strength-to-weight ratio for demanding structural applications.

  • 6061-T6 -- General purpose, excellent weldability
  • 7075-T6 -- Aerospace grade, highest strength
  • 2024 -- Fatigue resistant, aerospace structural
  • 5052 -- Marine grade, superior corrosion resistance
Read More About Aluminum Machining

Need the Complete Material Reference?

Download our full guide -- specs, machinability data & grade comparisons all in one PDF. Or get a tailored quote for your specific material and project requirements.

Request a Quote Download PDF Guide
Surface Finish

In-House 20+ Options

Self-owned anodizing and blackening lines -- zero outsourcing delays, complete quality control.

Anodized aluminum parts showing Type II and Type III hard anodizing finish

Anodizing

In-House

Type II and Type III hard anodizing on aluminum. Self-owned lines ensure zero outsourcing delays. Clear, black, and custom colors with MIL-SPEC compliance.

Read More
Copper blackened optical components with uniform matte black finish

Copper Blackening

In-House

Proprietary in-house copper blackening for optical components requiring low reflectivity. Uniform matte black finish with excellent adhesion and corrosion protection.

Read More
Passivated stainless steel medical components with enhanced corrosion resistance

Passivation

ASTM A967

Citric and nitric acid passivation for stainless steel per ASTM A967. Removes free iron and maximizes corrosion resistance for medical and food-grade applications.

Read More
Powder coated industrial components in various RAL colors

Powder Coating

RAL Colors

Durable thermosetting powder in any RAL color. Superior impact resistance and UV stability for industrial enclosures, structural components, and consumer products.

Read More
Bead blasted metal parts with uniform matte satin texture

Bead Blasting

Ra 0.8-3.2μm

Glass bead and aluminum oxide blasting for uniform matte or satin textures. Removes machining marks and prepares surfaces for subsequent coatings. Ra 0.8-3.2μm achievable.

Read More
Various additional surface finishing options including electropolishing, nickel plating and PVD coating

15 More Finishes

20+ Options

Electropolishing, nickel plating, zinc plating, black oxide, electroless nickel, PVD coating, chromate conversion, and more.

View All Finishes

Ready to specify your surface finish?

Get a tailored recommendation from our engineers -- or download the full finishing specification sheet for your records.

Request a Quote Download PDF
CMM coordinate measuring machine in LOM quality inspection lab

CMM Coordinate Measuring Machine -- In-House Inspection

Quality Assurance

Quality You
Can Trust.

"Every part is inspected. Full dimensional reports provided."

Certifications

ISO 9001 2015
IATF 16949 Automotive
ISO 13485 Medical
ISO 14001 Environmental
IQC
Incoming
IPQC
In-Process
FQC
Final
OQC
Outgoing
Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Industries Served

Precision Parts for
Every Critical Sector

Optical & Camera

Lens assemblies, camera housings, and micro-precision optical components with sub-micron surface finish.

Automotive

BMS components, chassis parts, and sensors. IATF 16949 certified with PPAP Level 3 documentation support.

Medical Devices

Surgical instruments, implant components in 316L and Ti-6Al-4V. ISO 13485 certified with full traceability.

Aerospace & Defense

High-strength Inconel and titanium components machined to aerospace tolerances with full material certification.

Robotics & Automation

Precision gears, housings, and actuator components for next-generation automation systems.

5G / Telecom

RF components, heat sinks, and antenna housings machined from aluminum and copper alloys.

Semiconductor

Fixtures, test equipment, and wafer handling components machined to cleanroom-ready specifications.

Electronics

Enclosures, heatsinks, and precision brackets for consumer and industrial electronics at volume scale.

Why LOM

Your Offshore
Manufacturing Department

We don't just machine parts. We embed ourselves as an extension of your engineering and supply chain team -- with the assets, certifications, and expertise to back it up.

01
Scale Agility

From 1 to 1,000,000
Pieces

No MOQ restrictions. Our flexible production model scales with you -- from NPI prototyping (1-3 day turnaround) through bridge production to full mass manufacturing, all with the same engineering team and quality system.

1-3 day prototype turnaround
No minimum order quantity
Seamless NPI → mass production
02
Engineering First

80+ DFM Engineers
On Every Order

Our dedicated DFM team reviews every design before machining begins -- identifying cost-saving opportunities, flagging tolerance risks, and recommending material alternatives. You get engineering partnership, not just a quote.

4-hour quote turnaround
DFM review included
Cost optimization guidance
Supply Chain Control

In-House Finishing.
Zero Outsourcing.

Self-owned anodizing lines, copper blackening, and 20+ surface finishing options -- all under one roof. No outsourcing delays, no quality handoff risks, complete traceability from raw material to finished part.

Self-owned anodizing lines
20+ finishing options
End-to-end logistics
04
Zero-Defect Philosophy

IQC → IPQC →
FQC → OQC

Every order undergoes four-stage quality control with CMM verification, XRF material analysis, and complete documentation. PPAP Level 3 support available for automotive customers.

ISO 9001:2015 IATF 16949:2016 ISO 13485 ISO 14001
800+
Global Clients
100K+
Projects Delivered
20+
Years Experience
$60M+
Manufacturing Assets
Quality Control

Four-Stage
Quality Gate

  1. IQC

    Incoming Quality Control

    XRF material verification, dimensional check, and supplier certificate review on all raw materials before production begins.

  2. IPQC

    In-Process Quality Control

    Real-time inspection at every machining stage. CMM spot-checks, surface roughness measurement, and process parameter monitoring.

  3. FQC

    Final Quality Control

    100% dimensional inspection with CMM, visual inspection, and functional testing against customer drawing requirements.

  4. OQC

    Outgoing Quality Control

    Pre-shipment final audit, packaging inspection, and CoC documentation. PPAP Level 3 support for automotive customers.

ISO 9001
Quality Management
System 2015
IATF 16949
Automotive Quality
Standard 2016
ISO 13485
Medical Device
Quality System
ISO 14001
Environmental
Management 2015
Inspection Equipment
CMM (Coordinate Measuring)
XRF Analyzer
Surface Roughness Tester
Optical Comparator
Hardness Tester
20+ Inspection Tools
LOM Metal Machining quality control facility

50,000 m² Manufacturing Facility · Greater Bay Area, China

The Process

From File to
Finished Part

Upload Files

STEP, IGES, DWG, PDF -- any format accepted. Include quantities, materials, and tolerance requirements.

DFM Review

80+ engineers analyze your design for manufacturability, cost optimization, and tolerance feasibility within 4 hours.

Precision Machining

600+ machines execute your order with ±0.005mm tolerance control, four-stage QC, and real-time progress updates.

Delivered to Your Door

End-to-end logistics including customs clearance, CoC documentation, and PPAP support. 10+ years international shipping experience.

Client Voices

Trusted by
800+ Engineers

"LOM's DFM feedback saved us 3 weeks and reduced our part cost by 22%. Their engineers caught a tolerance stack-up issue our own team missed. This is what a real manufacturing partner looks like."

MK
Michael K. Mechanical Engineer · Medical Device OEM · Germany

"We've been sourcing IATF-compliant parts from LOM for 4 years. On-time delivery rate is consistently above 98%, and their PPAP documentation is the most complete we've seen from any overseas supplier."

SL
Sarah L. Procurement Director · Tier 1 Automotive Supplier · USA

"As a robotics startup, we needed a partner who could do 5 prototypes this week and 50,000 units next quarter. LOM is the only supplier we've found who genuinely delivers on both. They're our de facto manufacturing arm."

JR
James R. CEO & Co-Founder · Robotics Startup · Canada
Start Your Project

Get Your 4-Hour
Engineering Quote

Upload your files and our 80+ DFM engineers will review your design, identify cost-saving opportunities, and return a detailed quote -- typically within 4 business hours.

How It Works

  1. 1
    Upload Your Files
    STEP, IGES, DWG, PDF -- any format accepted. Include quantity and material requirements.
  2. 2
    DFM Review by 80+ Engineers
    Our team analyzes manufacturability, flags risks, and identifies cost-saving opportunities.
  3. 3
    Receive Detailed Quote
    Pricing, lead time, material recommendations, and process plan -- within 4 business hours.
  4. 4
    Approve & We Machine
    Confirm order and we begin production. Real-time updates, 4-stage QC, delivered to your door.
No MOQ restrictions -- 1 piece to 1,000,000+
NDA available upon request
PPAP Level 3 documentation support
ISO 9001 · IATF 16949 · ISO 13485 certified

Request a Quote

No MOQ · NDA Available · PPAP Level 3 Support · ISO 9001 · IATF 16949

Questions Before You Quote?

Our engineers respond within 2 hours.

Email Us Call Us
ISO 9001 IATF 16949 ISO 13485 ISO 14001