Contract Manufacturer Since 2009

B2B Custom CNC Machining Supplier for Global Brands

KH Precision specialises in large-format CNC machining and large grinding up to 3000 mm. We deliver high-precision custom metal parts with reliable mass-production capacity for industrial clients worldwide.

  • Machining and grinding envelopes up to 3000 mm
  • Tolerances held to ±0.005 mm on critical features
  • Prototype, low-volume and mass-production routes under one roof
  • ISO 9001 / IATF 16949 / ISO 14001 / ISO 13485 certified operation
±0.005 mm Tolerance
20+Years Experience
50K+Projects Delivered
±0.005mmTolerance
100%Inspected
1–7 DaysRapid Delivery
97.5%On-Time Delivery
  • ISO 9001:2015
  • IATF 16949
  • ISO 14001
  • ISO 13485
  • 5-Axis CNC Machining
  • Large-Format Gantry Milling
  • CNC Turning & Mill-Turn
  • Precision Grinding
  • Wire EDM
  • Mass Production
What We Do

Our Machining Capabilities

KH Precision provides one-stop manufacturing solutions for customers worldwide.

Chinese CNC Supplier

Rapid CNC Machining Services

We focus on efficient production processes and consistent product quality, handling materials across both metals and plastics.

Tier 01

Basic

One-Stop Solution

  • Premium quality assurance
  • Comprehensive machining services
  • Flexible customisation plans
  • Online technical support
  • 2-hour rapid response
Popular
Tier 02

Optimal

Rapid Prototyping

  • Fast delivery speed
  • Precision tolerance up to ±0.005 mm
  • Flexible design based on product function
  • No minimum quantity for small batch trials
  • Complete process options
Tier 03

Ultimate

Stable Mass Production

  • Large-scale manufacturing equipment
  • 3–7 days stable lead time
  • Strict cost control
  • Consistent quality maintenance
  • ISO certified factory
CNC machining engineer at KH Precision
KH Precision engineer reviewing a drawing
Industry Leader

About KH Precision

KH Precision holds multiple certifications, including ISO 9001, ISO 13485 and ISO 14001. We focus on enhancing our clients' brand growth and competitiveness, meeting their needs through precise technology and efficient production processes.

Inspection Reports

Quality inspection reports, material inspection reports and first article inspection reports supplied as standard.

Online Project Tracking

Customers can follow project progress and logistics status in real time from anywhere.

Advantages of KH Precision

Where Our Strengths Sit

KH Precision is equipped with over 100 CNC machines ranging from 3 to 5 axes, plus a comprehensive quality control system. Use the dots to move through them.

Capability

5-Axis CNC Machining Services

KH Precision runs advanced 5-axis CNC machines with a wide range of material options. Using two superior machining methods, we produce precise and complex parts. Our experienced team and manufacturing capacity meet customers' rapid design iterations and strict timing for complex precision work.

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5-axis CNC machining services
Effortless

Small Batch CNC Machining

Small batch CNC parts manufacturing with over 40 types of materials and a range of surface treatment options, at factory-direct pricing. The complete production process can save 10% to 20% in time cost.

Rapid Quote
Low volume CNC machined parts
Simple

Wire EDM

Suitable for cutting hard alloys, tool steels, stainless steel and other difficult-to-machine materials. Kerf width ranges from 0.025 mm to 0.25 mm (0.001 to 0.01 inch), allowing precise machining of fine and complex contours such as internal holes and slender slots.

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CNC wire EDM machine
Confident

Precision Grinding Services

When standard CNC tolerances are not enough, our precision grinding delivers accuracy within ±0.003 mm to ±0.005 mm. We use a constant-temperature workshop to negate thermal expansion and guarantee dimensional consistency, and we manage thermal stability through shipping too.

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Precision grinding services
Our Expertise

Metal Material Machining

High-precision machining across a wide range of industrial-grade metals, to meet your most demanding specifications.

Aluminum CNC machined parts

Aluminum Alloy

Lightweight, highly workable and corrosion-resistant. Ideal for aerospace, automotive and high-end consumer electronics.

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Stainless steel machined parts

Stainless Steel

Exceptional strength with superior corrosion resistance. Widely used in medical devices, food processing and marine equipment.

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Titanium CNC machined parts

Titanium Alloy

High strength-to-weight ratio and excellent heat resistance. Built for critical aerospace and medical implant applications.

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Copper and brass machined parts

Copper & Brass

Superior electrical and thermal conductivity. Frequently requested for electrical components and decorative precision hardware.

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Our Expertise

Plastic Material Machining

High-precision machining across a wide range of engineering plastics, to meet your most demanding technical specifications.

ABS machined parts

ABS

Impact resistance combined with high rigidity. Easily machined and finished, which makes it reliable for functional prototypes and durable housings.

Material guide on request
Nylon machined parts

Nylon

Exceptional toughness and wear resistance. Ideal for industrial parts such as gears and bearings that need low friction and high durability.

Material guide on request
PEEK machined parts

PEEK

High-performance polymer with extreme heat and chemical resistance. Used for critical components in aerospace, medical and semiconductor work.

Material guide on request
PTFE machined parts

PTFE

The lowest friction coefficient and superior chemical inertness. Best suited to high-temperature seals, gaskets and non-stick components.

Material guide on request
POM Delrin machined parts

POM (Delrin)

Highly stable and rigid with low moisture absorption. Our choice for high-precision components needing tight tolerances and dimensional stability.

Material guide on request
Acrylic PMMA machined parts

PMMA (Acrylic)

Exceptional optical clarity and UV resistance. Widely used for transparent housings, lenses and display panels where visibility is critical.

Material guide on request
Exploring

Project Case Studies

We strictly respect customer privacy. Only real events are recorded, without disclosing any customer information.

Robotics Core components of robots machined by KH Precision

Core Components of Robots

Made from stainless steel and aluminum using precision machining to a tolerance of ±0.01. After heat treatment and finishing, the parts were delivered satisfactorily and have drawn consistent positive feedback.

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Efficient

Simple Six-Step Process

We manufacture to your drawings and requirements, and only pack and dispatch once strict inspection confirms the parts meet your expectations.

01

Upload Data

Upload CAD files and specify your requirements.

02

Quotation

Receive a quote within 24 hours.

03

Production

Manufacturing starts according to the drawings.

04

Quality Inspection

Strict inspection of the finished products.

05

Packaging

Parts meeting quality standards are packed for transit.

06

Delivery

Shipped through our logistics network.

CNC Machining Factory

Our CNC Factory in China

Over 100 CNC machines from 3 to 5 axes, a wire EDM workshop and a full metrology lab, all on one site.

CNC production line
CNC Production Line
Second CNC production line
CNC Production Line 2
Coordinate measuring machine
CMM Inspection
Manual polishing and measurement team
Measurement Team
CNC engineer at the machine
CNC Engineer
Wire EDM workshop
Wire EDM Workshop
CNC engineer operating a machining centre
CNC Engineer
KH Precision workshop overview
Workshop Overview
Delivery Track Record

How We Are Measured

Customer identity stays confidential, so instead of quoting names we publish the figures our programmes are managed against.

98%
On-Time Delivery

Scheduled batches shipped against the agreed date, with the schedule confirmed at quotation rather than assumed.

5K+
Projects Delivered

Prototype, low-volume and production programmes completed across aerospace, medical, robotics and industrial customers.

100%
Documented Inspection

Every order ships with an inspection record covering critical dimensions, with FAI and material certification available on request.

More Info About

Latest News & Guides

FAQ

Common Inquiries

  • Direct manufacturing, lower cost
    We are an integrated CNC machining manufacturer working directly from the production floor. By eliminating intermediaries, we reduce unnecessary cost while maintaining consistent quality and reliable delivery.

    Machining accuracy across all production stages
    For CNC prototyping, tolerances can reach ±0.005 mm (±0.0002 in).
    For low-volume production, stable tolerances of ±0.01 mm (±0.0004 in) are maintained.
    For high-volume production, stable tolerances of ±0.025 mm (±0.001 in) ensure repeatability and efficiency.

    Advanced equipment and proven processes
    We use CNC machining centres, gantry machines, CNC lathes and mill-turn systems to handle complex geometry and maintain consistency across batches. Standardised workflows and proven machining strategies deliver repeatable results.

    Experienced team and strong engineering support
    With over 20 years of CNC machining experience, our team provides practical Design for Manufacturability (DFM) guidance to reduce risk, control cost and meet functional and dimensional requirements without over-engineering.

  • Online quotation system
    By uploading your CAD files through our online quotation system, you receive an initial price estimate and lead-time evaluation efficiently. The system supports both prototyping and production projects.

    Key factors affecting CNC machining cost
    Material type and part size; machining complexity and tolerance requirements; order quantity (prototype, low volume or high volume); surface finishing and inspection requirements.

    Design optimisation tips for cost efficiency
    Avoid unnecessarily tight tolerances on non-critical dimensions; use standard materials and common tool radii where possible; minimise deep pockets and overly complex chamfer features.

  • CNC machining vs. 3D printing
    CNC machining suits parts requiring strict material properties, tight tolerances and superior surface finishes. 3D printing suits rapid form validation and visual prototypes with complex internal geometry.

    CNC machining vs. injection molding
    CNC machining requires no tooling investment, which makes it ideal for prototypes and low-to-medium volume production. Injection molding is more cost-effective at large scale, but carries high upfront mould cost.

    Recommended strategy
    During early product development, CNC machining is commonly used for design validation. Once the design is finalised and demand increases, injection molding or another mass-production process may be introduced.

  • Non-disclosure agreements and IP policy
    Non-Disclosure Agreements can be signed on request, ensuring that all drawings, designs and project information remain confidential.

    Secure file transfer and data management
    Controlled file access and internal permission management ensure customer data is only accessible to authorised engineering and production personnel.

    Building a trusted long-term partnership
    We prioritise long-term cooperation based on transparency, compliance and clearly defined responsibilities.

  • Metal materials
    Aluminum alloys such as 6061, 6063 and 7075; carbon steel and alloy steel; stainless steel such as 304, 316, 303 and 17-4PH; copper such as C110 and oxygen-free copper; brass such as C360 and C260; titanium alloys such as Ti-6Al-4V (Grade 5); zinc alloys.

    Common engineering plastics
    ABS, POM (Delrin), Nylon (PA6 / PA66), PC (polycarbonate), PEEK and PTFE (Teflon).

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