Precision CNC Manufacturing

Custom CNC Machining Services for Global OEMs

On-demand precision CNC machining for audio, 3C electronics, precision fasteners and thermal management parts — machined from your drawings with free DFM review, tight tolerances and full inspection.

ISO 9001 & IATF 16949 Certified quality system
±0.005 mm Achievable tolerance
200+ CNC Machines In-house capacity
CMM Inspection Full dimensional report
Machining Lines

Explore Our Capability Categories

Every component we make is custom-machined from your drawings. Browse each line to see how our machining capabilities apply to your industry.

Custom CNC Turned Flange & End Cap for EV Motor

Custom CNC Turned Flange & End Cap for EV Motor

Custom CNC turned flanges and end caps for EV motors, gearboxes and pumps - aluminum, 304 stainless or copper, +/-0.01…

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Custom CNC Machined Automotive Aluminum Components for EV

Custom CNC Machined Automotive Aluminum Components for EV

Custom CNC-machined aluminum automotive components for EV - manifold blocks, valve bodies, motor flanges and ECU housings, +/-0.01 mm tolerance.

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Custom CNC Aluminum Battery End Plate for EV

Custom CNC Aluminum Battery End Plate for EV

Custom CNC aluminum battery end plates and mounting brackets for EV packs - milled pockets, automotive hole patterns, black or…

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Custom CNC Aluminum HIFI Audio DAC Chassis Enclosure

Custom CNC Aluminum HIFI Audio DAC Chassis Enclosure

Custom CNC aluminum HIFI chassis for DACs, headphone amps and audio players - solid 6061 billet, brand-color anodize, front-panel cutouts…

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Copper Skived Fin Heat Sink for High-Power Cooling

Copper Skived Fin Heat Sink for High-Power Cooling

Custom T2 copper skived-fin heat sinks for high-power CPU, IGBT, laser diode and liquid cold plate bases - milled flat,…

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U-Channel Clamp-On Aluminum Heat Sink for Pipe Mounting

U-Channel Clamp-On Aluminum Heat Sink for Pipe Mounting

U-channel clamp-on aluminum heat sinks with semicircular base for pipes and cylindrical housings, black anodized, CNC cut and drilled to…

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Custom 6061 Round Aluminum Heat Sink CNC Machined

Custom 6061 Round Aluminum Heat Sink CNC Machined

Custom skived-fin aluminum heat sinks for IGBT and power modules - milled flat base, dense comb fins, drilled and tapped…

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Skived Fin Aluminum Heat Sink for IGBT Power Modules

Skived Fin Aluminum Heat Sink for IGBT Power Modules

Custom skived-fin aluminum heat sinks for IGBT and power modules - milled flat base, dense comb fins, drilled and tapped…

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Stacked Fin Round Aluminum Heat Sink for High-Power LED

Stacked Fin Round Aluminum Heat Sink for High-Power LED

Custom stacked-fin round aluminum heat sinks for high-power LED downlights, street lights and COB modules - dense radial fins, CNC…

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Standard Aluminum Extrusion Heat Sink Profiles Black or Natural

Standard Aluminum Extrusion Heat Sink Profiles Black or Natural

Standard aluminum extrusion heat sink profiles in black anodized or natural finish - 6063, cut to length, drilled holes, fast…

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Black Anodized Aluminum Heat Sink for Power Electronics

Black Anodized Aluminum Heat Sink for Power Electronics

Custom black anodized aluminum heat sinks with dense fins, flat base and drilled mounting holes for power supplies, amplifiers and…

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Sunflower Pin Fin Aluminum Heat Sink for COB LED

Sunflower Pin Fin Aluminum Heat Sink for COB LED

Custom sunflower pin-fin round aluminum heat sinks for COB LED and high-power lighting - radial fins, central bore, gold anodized,…

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Custom Extruded Aluminum Heat Sinks Cut to Size

Custom Extruded Aluminum Heat Sinks Cut to Size

Custom extruded aluminum heat sinks - 6063 profiles cut to size with CNC holes, anodizing and adhesive backing. From tiny…

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Custom Aluminum Heat Sinks for Amplifier and Inverter

Custom Aluminum Heat Sinks for Amplifier and Inverter

Custom 6063 extruded aluminum heat sinks for audio amplifiers, inverters, welders and power supplies - flat transistor base, drilled mounting…

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Custom CNC Machined Aluminum Heat Sinks

Custom CNC Machined Aluminum Heat Sinks

Custom CNC aluminum heat sinks with milled fins and integrated mounting holes - 6063/6061, anodized, +/-0.005 mm, prototype to volume.

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Custom Stamped Aluminum Audio Decorative Sheet

Custom Stamped Aluminum Audio Decorative Sheet

This decorative sheet is manufactured from lightweight aluminum using precision stamping for clean forming. A painted surface finish provides protection…

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Black & Red Anodized Aluminum CNC Camera Lens Adapter Rings

Black & Red Anodized Aluminum CNC Camera Lens Adapter Rings

Custom CNC turned aluminum camera lens adapter rings with diamond knurling, precision internal threads and black/red anodizing for accurate, play-free…

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Precision CNC Turned & Milled Aluminum Flange Adapter Components

Precision CNC Turned & Milled Aluminum Flange Adapter Components

Custom CNC turn-mill aluminum flange adapters and mounting plates with precision hole patterns, threaded holes and concentric locating faces for…

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Custom CNC Machined Aluminum Earphone Housing

Custom CNC Machined Aluminum Earphone Housing

This CNC machined earphone housing is manufactured from high-quality aluminum, designed for consumer audio products requiring refined appearance and stable…

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CNC Coffee Machine Parts Manufacturer

CNC Coffee Machine Parts Manufacturer

A professional manufacturer specializing in custom, non-standard CNC machining of mechanical parts. We can tailor-make a wide range of special…

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Custom Aluminum Earphone Case with Laser Engraving

Custom Aluminum Earphone Case with Laser Engraving

This CNC machined aluminum earphone case is designed for premium audio products that require both functional protection and branded appearance.…

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iPad Hub Manufacturer

iPad Hub Manufacturer

Our iPad hubs are CNC-machined from high-quality metal materials, providing stable structure, efficient heat dissipation, and precise interface

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CNC Turned Aluminum Earphone Metal Components

CNC Turned Aluminum Earphone Metal Components

These earphone metal components are CNC turned from 6063 aluminum to achieve precise dimensions and stable quality. Anodized surface treatment…

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Custom CNC Machining Service

Custom CNC Machining Service

One-stop custom CNC machining: ±0.005mm, IATF 16949, 200+ machines, quote in 24h.

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Precision CNC Machined Aluminum Enclosure

Precision CNC Machined Aluminum Enclosure

CNC machined aluminum enclosure housings with internal bosses, threaded holes and precision cutouts for electronics, robotics and instrumentation.

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Custom CNC Machined Aluminum Audio Enclosures

Custom CNC Machined Aluminum Audio Enclosures

This audio enclosure is manufactured from 6063 aluminum using precision CNC machining and stamping processes to ensure accurate dimensions and…

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CNC Milled Black Anodized Aluminum Part

CNC Milled Black Anodized Aluminum Part

Custom CNC milled black anodized aluminum parts with threaded and through holes for precision machinery, robotics and industrial tooling.

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Portable CNC Machined Aluminum Audio Enclosure

Portable CNC Machined Aluminum Audio Enclosure

This portable audio enclosure is made from 6063 aluminum through CNC machining and stamping, followed by polishing and sandblasting to…

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Robot Leg Support Bracket

Robot Leg Support Bracket

Precision humanoid robot leg support bracket CNC machined from 7075 aluminum. Lightweight, high-strength load-bearing structure.

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Custom CNC Machined Aluminum Audio Control Panel

Custom CNC Machined Aluminum Audio Control Panel

This audio control panel is precision CNC machined and stamped from 6063 aluminum, then polished and sandblasted for a smooth…

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Humanoid Robot Leg U-Bracket

Humanoid Robot Leg U-Bracket

Custom humanoid robot leg U-bracket CNC machined from 7075 aluminum. 5-axis precision, tight tolerance, lightweight high-strength design.

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Custom CNC Machined Aluminum Mixer Enclosures

Custom CNC Machined Aluminum Mixer Enclosures

These mixer enclosures are manufactured from 6063 aluminum using CNC machining and stamping for precise structure and consistent quality. After…

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Power Bank Enclosure

Power Bank Enclosure

Custom CNC machined aluminum power bank enclosure with thin-walled anodized housing. Tight tolerance, lightweight and premium surface finish.

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Precision CNC Machined Aluminum Audio Interface Panel

Precision CNC Machined Aluminum Audio Interface Panel

This audio interface panel is CNC machined and stamped from 6063 aluminum, followed by polishing and sandblasting for a smooth,…

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Recorder Shell

Recorder Shell

Precision recorder shell CNC machined from 6061-T6 aluminum. ±0.005mm tolerance with black anodized finish for electronic devices.

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Custom Stainless Steel Automotive Fasteners

Custom Stainless Steel Automotive Fasteners

These automotive fasteners are manufactured from stainless steel and processed through cutting, grinding, thread tapping, and polishing to ensure accurate…

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Customized CNC Aluminum Machined Parts

Customized CNC Aluminum Machined Parts

Customized CNC machined aluminum components produced on multi-axis turn-mill centers. We precision machine aluminum parts with complex geometries, cooling fins,…

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Precision Stainless Steel Wheel Bearing

Precision Stainless Steel Wheel Bearing

This stainless steel wheel bearing is precision-finished through cutting, grinding, thread tapping, and polishing to achieve smooth rotation and reliable…

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Custom CNC Turned Aluminum Knobs

Custom CNC Turned Aluminum Knobs

Custom CNC turned aluminum knobs produced on precision lathes. We manufacture control knobs with CD texture, anodized finishes and custom…

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Custom CNC Machined Aluminum Bicycle & MTB Parts

Custom CNC Machined Aluminum Bicycle & MTB Parts

These CNC machined bicycle and mountain bike components are manufactured from high-quality aluminum alloy to deliver lightweight strength, precise fit,…

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Aluminum CNC Machining & Laser Cutting Service

Aluminum CNC Machining & Laser Cutting Service

Aluminum CNC machining + laser cutting + hard anodizing service — ±0.005mm, IATF 16949, in-house hard anodizing.

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CNC Turned Hex Lock Nuts & Bushing Components

CNC Turned Hex Lock Nuts & Bushing Components

Assembled aluminum turning components combine multiple turned and milled features in one part: a hex wrench body for tool engagement,…

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Custom CNC Turned Nut & Stud

Custom CNC Turned Nut & Stud

These nuts and studs are CNC turned to ensure precise thread accuracy and stable fastening performance. Available in brass, aluminum,…

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Custom CNC Turned Aluminum Audio Knob

Custom CNC Turned Aluminum Audio Knob

This audio knob is precision CNC turned from 6063 aluminum and finished with a knurled or CD texture surface for…

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Custom Aluminum Turned Housing Components

Custom Aluminum Turned Housing Components

Custom aluminum turning components are rotary symmetric parts machined on CNC lathes to form housing shells, caps, sleeves and flanges.…

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Precision Stamping Parts Manufacturer

Precision Stamping Parts Manufacturer

Rejin CNC manufactures precision stamping parts with high dimensional accuracy and consistent quality. Our metal stamping components are widely used…

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CNC Turned Stainless Steel Shaft Clamping Collar Bushing

CNC Turned Stainless Steel Shaft Clamping Collar Bushing

Custom CNC turned stainless steel shaft clamping collars for precision locking in automation, robotics and linear motion systems.

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Precision CNC Machined Aluminum & Stainless Steel UAV Structural Parts

Precision CNC Machined Aluminum & Stainless Steel UAV Structural Parts

These CNC machined UAV structural components are designed for aerospace and unmanned aerial vehicle applications, offering lightweight construction, high strength,…

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Custom Sheet Metal Fabrication Parts

Custom Sheet Metal Fabrication Parts

These sheet metal fabrication parts are produced using laser cutting, precision bending, and welding processes to achieve strong structures and…

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Custom CNC Machined Medical Device Metal Parts

Custom CNC Machined Medical Device Metal Parts

These CNC machined metal parts are designed for medical devices, providing high precision, stable quality, and reliable performance. Suitable for…

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Custom CNC Machined Robot Joint & Structural Parts

Custom CNC Machined Robot Joint & Structural Parts

These CNC machined robot components are designed for robotic systems, including joint parts, shafts, and structural components. High precision ensures…

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Core Capabilities

Our Core Machining Strengths by Industry

Four specialty lines we run in-house every day — with the machining depth, process control and track record OEM buyers notice.

Flagship Line — Our #1 Speciality

Audio & Electroacoustic CNC Components

CNC-machined enclosures, faceplates, knobs, panels and brackets for premium audio brands — from thin-wall cavity housings to cosmetic-grade anodized surfaces, with the acoustic-tolerance fits and batch consistency audio OEMs depend on.

Thin-wall cavity machining Cosmetic-grade anodizing & brushing Tight acoustic assembly fits Prototype to 100k+ annual volume
Explore Audio Machining
Line 02

3C Electronics CNC Parts

Frames, housings, connectors and thin-wall parts for phones, wearables and smart devices.

Thin-wall & micro features High-gloss / anodized finishes 7-day rapid prototyping NDA-protected development
Explore 3C electronics machining
Line 03

Precision Parts & Fasteners

Custom turned and milled screws, pins, sleeves, threaded and precision components.

Turn-mill combined Thread precision 50,000+ piece runs 100% CMM inspection
Explore precision parts & fasteners
Line 04

Thermal Management Parts

Aluminum and copper heat sinks, cold plates and thermal components.

Aluminum & copper expertise Optimized fin geometry CNC + brazing process Thermal design support
Explore heat sink machining
More Industries We Serve

Precision Parts Across High-Tech Sectors

The same engineering rigor, quality system and machining capabilities applied to demanding industries worldwide.

01

CNC Machining for Automotive & EV

Motor housings, brackets and battery components — 5-axis machined to ±0.005mm, anodized and leak-tested for EV powertrain duty.

EV Powertrain ±0.01 mm Anodized Leak-Tested
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02

5-Axis CNC Machining for Aerospace & UAV

Lightweight alloy structural parts — 5-axis machining with ±0.005mm control and full material traceability.

5-Axis ±0.005 mm Light Alloys Full Traceability
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03

CNC Machining for Robotics

Joints, housings and structural brackets — high-strength 7075/6061 with servo-critical geometric tolerances.

7075 / 6061 Servo-Critical Fit Tight Tolerances Precision Bores
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04

CNC Machining for Medical Devices

Instruments, housings and biocompatible parts — medical-grade stainless & titanium with full documentation.

Stainless 316 Titanium Biocompatible Full Documentation
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FAQ

Frequently Asked Questions

Everything OEM buyers ask before placing precision CNC work with us.

What tolerances can you hold?+
Our stable machining tolerance ranges from ±0.005 mm to ±0.005 mm for precision metal components. Strict dimensional inspection is conducted for all finished parts to meet the tight precision requirements of automotive, drone and audio equipment industries.
What materials can you machine?+
We machine aluminum alloys, stainless steel, carbon steel, brass, copper and titanium, as well as engineering plastics. Aluminum 6061/6063/7075, stainless 303/304/316 and copper are our most processed materials.
What industries do you manufacture CNC parts for?+
Our core strength is audio & electroacoustic CNC components — enclosures, panels, knobs and brackets for premium audio brands. We also specialize in 3C electronics parts, precision parts & fasteners, and heat sink / thermal management parts, plus automotive, aerospace, robotics and medical components.
What custom machining services can you provide?+
We integrate full-set precision manufacturing services: 3/5-axis CNC milling, CNC turning, professional surface finishing and DFM design consulting, covering prototype development and large-volume OEM batch production.
Do you offer DFM feedback and prototypes?+
Yes. Send your 2D/3D drawings and we provide free DFM manufacturability analysis to optimize structure, reduce production costs and avoid processing defects, with a competitive quote within 24 hours on business days. Prototypes ship in 7–15 days depending on complexity, and rapid CNC turned, milled and 5-axis prototyping is available to verify appearance and assembly before mass production.
What is your minimum order quantity?+
No MOQ — start from 1 prototype piece and scale to 50,000+ parts per month. Our sweet spot is 50–50,000 parts per order.
What is the ordering process for custom metal parts?+
1. Send us your 2D/3D CAD drawings and detailed requirements 2. We conduct a DFM review and send you an official quotation within 24 hours 3. Confirm order details and arrange payment 4. Arrange prototyping and mass production step by step 5. Complete full quality inspection and arrange delivery
Can you sign an NDA before we share drawings?+
Absolutely. We sign NDAs routinely and can use your template or ours. All project data stays on our closed internal network.
Can I track my order production status online?+
Absolutely. Our sales team will regularly update production progress including raw material preparation, machining, surface treatment and final inspection. You can inquire about order details anytime via email or WhatsApp throughout the whole production cycle.
What payment terms do you accept for OEM orders?+
We support flexible international payment methods including T/T bank transfer, Western Union and PayPal. For long-term bulk cooperation clients, negotiable payment terms are available upon discussion.
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Engineer Review

We study your requirements and propose a workable solution with material & process options.

3
Quote Within 24h

Detailed quotation with specs, options and lead time — no hidden fees.

4
Sample & Production

Approve the sample, then we mass-produce with full QC and on-time shipping.

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