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OEM / ODM Custom CNC Machining &
Injection Molding Parts

Premium precision metal & plastic component parts manufactured in Shenzhen, China since 2001. Trusted by global industries for high-quality, cost-effective, and reliable custom manufacturing solutions.

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Who is CMI?

Customparts Manufacturing Inc. Ltd (CMI) is a registered company in Hong Kong with a precision manufacturing facility, Guo Sheng Precision, located in Shenzhen, China since 2001. We specialize in producing high-precision metal and plastic component parts for industrial equipment and consumer products.

Our team brings decades of machining experience and technical expertise, skilled in all modern manufacturing technologies. We deliver complex, precision-engineered parts using the most suitable and cost-effective methods for each project.

ISO Certified Factory with 20+ Years Experience
Quick Response to Quotations & Orders
Free Sample Available Before Mass Production
Full Quality Assurance & Certification Reports
CNC Machining Facility

20+

Years of Precision Manufacturing Excellence

Our Capabilities

From concept to delivery, we offer end-to-end manufacturing solutions with advanced equipment and strict process control.

CNC Machining Centers

High-precision 3-axis, 4-axis, and 5-axis CNC machining for complex geometries and tight tolerances.

  • • Multi-axis simultaneous machining
  • • Tolerance: ±0.005mm
  • • Materials: Aluminum, Steel, Stainless Steel, Brass, Titanium

CNC Lathe Turning

High-speed precision turning for cylindrical and rotational parts with excellent surface finish.

  • • Bar feeding & chucking
  • • Diameter range: 1mm – 300mm
  • • Ideal for shafts, pins, connectors

Multitasking Lathes

Integrated turning and milling operations in a single setup for reduced lead time and higher accuracy.

  • • Y-axis & live tooling
  • • Complex part integration
  • • Reduced secondary operations

Precision Grinding

Surface, cylindrical, and centerless grinding for ultra-fine finishes and micron-level accuracy.

  • • Surface roughness: Ra 0.1μm
  • • Hardened steel & exotic alloys
  • • Critical dimension control

EDM & Wire Cutting

Electrical Discharge Machining for intricate shapes, deep cavities, and hardened materials.

  • • No mechanical stress
  • • Tolerance: ±0.002mm
  • • Ideal for molds, dies, and tooling

Plastic Injection Molding

High-volume production of complex plastic parts with consistent quality and tight tolerances.

  • • Multi-cavity molds
  • • Materials: ABS, PC, POM, PEEK, Nylon
  • • Cleanroom options available

Our Product Range

We manufacture a wide range of precision components using advanced technologies and strict quality control.

Precision Machining Parts

Precision Machining Parts

Custom CNC-machined components with tight tolerances for industrial and medical applications.

Casting Parts

Casting Parts

Die casting and investment casting for complex metal parts in aluminum and zinc alloys.

Forging Parts

Forging Parts

High-strength forged components for automotive and mechanical applications.

MIM Parts

Metal Injection Molding (MIM)

Complex small metal parts with excellent mechanical properties and high consistency.

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Plastic Injection Molding Parts

High-volume plastic components with excellent surface finish and dimensional stability.

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Jigs & Fixtures

Custom tooling solutions for manufacturing, assembly, and inspection processes.

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Medical Device Components

High-precision parts for surgical instruments, diagnostic equipment, and implants.

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Automotive Components

Fuel lines, oil line parts, sensors, and transmission components for OEMs.

Industries We Serve

Our precision components are trusted across critical industries requiring reliability, durability, and high performance.

Automotive

Fuel lines, oil line components, sensors, transmission parts, and engine components.

Medical Devices

High-precision surgical tools, diagnostic equipment parts, and implantable components.

Electronics & Appliances

Housings, connectors, heat sinks, and structural components for consumer and industrial electronics.

Optical Instruments

Precision mounts, lenses housings, and alignment components with micron-level accuracy.

Semiconductor Equipment

Ultra-clean, high-precision components for wafer handling, vacuum chambers, and process tools.

Mechanical & Industrial

Gears, shafts, housings, and structural parts for machinery, printing, and textile equipment.

Why Choose CMI?

We combine decades of experience, advanced technology, and strict quality control to deliver unmatched value.

20+

Years of Manufacturing Experience

ISO

Certified Quality Management

24h

Fast Quotation & Response Time

Global

Serving Clients Worldwide

Get in Touch

Ready to start your next project? Contact us today for a fast quote and expert consultation.

Contact Information

info@customparts-mfg.com
8613760729638
WhatsApp: +86-13760729638
WeChat: +86-13760729638
136#, GangZai Street, FuRong Industrial Park, Shajing, BaoAn, Shenzhen, China
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