FACTORY-DIRECT PRECISION MANUFACTURING

Custom CNC Machining Services - Precision Metal Parts Supplier from China

From rapid prototypes to repeat production, Rejin CNC supports precision milling, turning, multi-axis machining, surface finishing and quality inspection under one manufacturing workflow.

✓ Drawing review ✓ Prototype to volume ✓ Global delivery support
23+Years of manufacturing experience
200+CNC and production machines
±0.01 mmCritical tolerance capability
24HTarget quotation response
Partners:
NVIDIA XJ Electric HUAWEI Xiaomi Luxshare Amphenol DJI BYD Geely Auto NIO Klipsch Audioengine JBL QCY Longjoin GWM NVIDIA XJ Electric HUAWEI Xiaomi Luxshare Amphenol DJI BYD Geely Auto NIO Klipsch Audioengine JBL QCY Longjoin GWM
MANUFACTURING CAPABILITIES

From Machining to Finishing, All Under One Roof

One supplier, fewer handoffs — turning, milling, 5-axis machining and surface finishing managed end-to-end, so quality stays consistent and delivery stays on schedule.

CNC Turning
01

CNC Turning

Multi-spindle turning of shafts, bushings, connectors and threaded components, holding tight runout and concentricity across production runs — from first-article samples through volume orders without drift in dimensional consistency.

CNC Milling
02

CNC Milling

3-axis and 4-axis milling of structural and functional parts in aluminum, stainless steel, copper, brass and engineering plastics, with in-process inspection to keep critical features within tolerance batch after batch.

CNC Machining
03

5-Axis CNC Machining

Complex contours, compound angles and undercuts machined in a single setup, eliminating repositioning errors and reducing cycle time on parts that would otherwise need multiple fixtures and operations.

Surface Treatments
04

Surface Treatments

Anodizing, electroplating, sandblasting, polishing, powder coating and laser marking sequenced directly after machining, so finish quality and turnaround stay consistent without handing parts off to a separate vendor.

QUALITY ASSURANCE

Inspection at Every Stage, Not Just the End

Incoming material, in-process dimensions, surface finish and final shipment — each checked before the part moves forward.

FACTORY VIDEO

See Rejin CNC Production in Motion

PROJECT WORKFLOW

A Clear Path From Drawing to Delivery

01

Submit RFQ

Send drawings, quantity, material, tolerance and finish requirements.

02

Engineering Review

We review manufacturability, cost drivers and potential production risks.

03

Prototype / Sample

Produce samples for dimensional, functional and appearance confirmation.

04

Production

Controlled machining, finishing and in-process inspection.

05

Final Inspection

Verify dimensions, appearance, documentation and packing requirements.

06

Global Delivery

Coordinate export packing, shipment documents and delivery support.

FACTORY & EQUIPMENT

Inside the Factory Floor

Machining, surface treatment, inspection and process control — shown as they actually run, not staged for a brochure.

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FREQUENTLY ASKED QUESTIONS

Information Buyers Usually Need Before RFQ

Provide complete requirements to improve quotation accuracy and shorten the engineering review cycle.

How do we ensure my design is ready for reliable manufacturing?

Every successful product starts with a manufacturability check. Upload your CAD file to instantly receive automated DFM analysis on key factors like geometry, tolerances, and wall thickness. For critical projects, our engineers perform a detailed manual review within one business day, providing clear, actionable recommendations on design adjustments, materials, and processes to ensure quality and avoid delays.

What sets Rejin CNC apart from other suppliers or platforms?

We combine in-house manufacturing with a vetted partner network under strict quality standards. Unlike intermediaries, we provide integrated engineering support, from prototyping to full-scale production and packaging. With dedicated project management and a focus on industries like automotive, medical, and electronics, we ensure reliability, consistency, and seamless scale-up for every order.

How fast can you deliver my parts?

Lead times vary based on part complexity, quantity, and process. Rapid prototypes (CNC/3D printing) can ship in 2–5 days. Low-volume production typically take 2–4 weeks. Submit your design details for an instant quote with a precise timeline.

How does the quotation process work at Rejin CNC?

We provide instant online quotes for standard manufacturing services. Simply upload your 2D or 3D files and select your preferred process, material, finish, and quantity. If your project is more complex, a dedicated engineer will reach out within one business day to review your requirements and prepare a customized proposal.

Can you support design changes or modifications after production starts?

Yes, we accommodate engineering change requests wherever possible. Minor adjustments during the prototyping stage are generally straightforward, while changes during mass production may affect cost and lead time. Our team will provide a clear impact assessment and assist you in implementing changes with minimal disruption.

What are your accepted file formats for quoting and production?

We support common 2D and 3D formats, including STEP, STL, IGES, X_T, DWG, and PDF. For best results, please upload complete, dimensioned drawings and specify critical tolerances, surface finishes, and material preferences in your notes.

Is there a minimum order quantity (MOQ)?

For prototyping and low-volume orders, we offer no MOQ so you can order as few as one part. For injection molding and large-scale production, MOQ depends on the tooling and process—our team will provide a detailed breakdown during quoting.

What quality certifications do you hold?

We are ISO 9001:2015 certified and comply with industry-specific standards such as IATF 16949 (automotive) etc. We can also provide material certifications, FAIRs, and third-party inspection reports upon request.

REQUEST A QUOTATION

Send Your Project Details

Our team will review your drawing, manufacturing requirements and expected volume, then provide quotation feedback.

✓ Drawing confidentiality ✓ Engineering feasibility feedback ✓ Prototype and production support








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