Aluminum‑Focused Precision Manufacturing Partner
Custom Metal & Plastic Parts
From Prototype to
Complete Assemblies
CNC machining, aluminum extrusion, finishing, and assembly solutions
from prototype to production.
- Prototype to Production
- Fast Turnaround
- Complete Manufacturing Solutions
Get a Quote for Custom Manufacturing
Get fast quotes, accurate lead times, and professional DFM feedback from our engineering team.
Drag & Drop Files, Choose Files to Upload
You can upload up to 15 files.
STEP •STP •SLDPRT •IGES •DWG •PDF •STL •JPG •PNG •ZIP •RAR
Drawings handled confidentially · NDA available on request
- 17+Years
Aluminum industry experience
- End‑to‑End Manufacturing
Machining, extrusion, finishing & assembly
- Engineering Support
Technical guidance from RFQ to delivery
-
Located in
Linqu, China
National aluminum specialty cluster
One Partner . Six Connected Capabilities
Manufacturing Capabilities
From raw material to finished parts and complete assemblies, each capability links to a focused service page.
CNC Machining
Milling · turning · tight-tolerance metal
and plastic parts
Aluminum Extrusion
Custom profiles · tooling · cutting ·secondary machining
Sheet Metal Fabrication
Cutting · bending · welding · sheet metal assemblies
Injection Molding
Tooling · engineering plastics ·
custom molded parts
Surface Finishing
Anodizing · powder coating · blasting · decorative finishes
Assembly & Box Build
Hardware installation · subassembly integration · final packing
Aluminum Cluster · Coordinated By Junchu
The Linqu Aluminum Supply
Chain Advantage
Based in Linqu County, Shandong - home to a national-level specialty
industrial cluster for aluminum profile products - JUNCHU coordinates
extrusion, CNC machining, finishing, inspection, and assembly through
one controlled project plan.
- Local access to aluminum materials and extrusion resources
- Coordinated machining, finishing, inspection, and assembly
- One controlled drawing version and agreed quality requirements
-
Fewer supplier handoffs and clear responsibility for quality and
delivery
Source: Shandong Provincial Department of Industry and Information Technology, 2025.
Simple,Accountable Process
HOW WE WORK
From early requirements to final delivery, one JUNCHU contact coordinates every step.
01
Share Your
Project
Add drawings, photos, or
reference files if available,
plus quantity, material, finish,
and target date.
02
Engineering
Review & DFM
We review
manufacturability,
tolerances, process routes, and key risks before quotation.
03
Quote & Plan
Receive a clear quotation with scope, lead time, inspection requirements,
and commercial terms.
04
Managed
Production
We coordinate manufacturing, finishing, assembly, and schedules under one project plan.
05
Inspect & Deliver
We complete final inspection, prepare required documents, pack securely, and arrange delivery.
Verifiable Quality
Quality Built Into Every Step
- Incoming material verification and supporting documents
- First article inspection before production, when required
- In-process checks on agreed critical dimensions
- Final dimensional and visual inspection
- Surface finish and packaging verification
JUNCHU manages inspection against the approved drawing revision and
agreed project requirements. Material and inspection records are
supplied as specified in the order.
Proof Through Real Work
Selected Custom Manufacturing Projects
Each case connects the part, material, process route, inspection method, and real-world application.
- Industrial Equipment
Extruded & CNC-MachinedAluminum Enclosure
- Transportation
Telescopic Aluminum TubeAssembly
- Building Systems
Finished Aluminum Housing
Materials & Finishing Gateway
Materials & Surface Finishes
Start with common aluminum alloys and surface finishes, then explore other metals and engineering plastics on one materials hub.
Aluminum Alloys
6061 · 6063 · 6082 · 7075 · 5052
Compare strength, machinability, formability, extrusion suitability, anodizing response, and
typical applications by alloy and temper.
Surface Finishes
Anodizing · Powder Coating Bead Blasting · Brushing Polishing · Wood Grain Transfer
Compare strength, machinability, formability, extrusion suitability, anodizing response, and
typical applications by alloy and temper.
Looking for other metals or engineering plastics?
Real People. Real Production.
The People and Manufacturing Network Behind Your Project
One accountable JUNCHU contact coordinates drawing review, production, inspection, and delivery under an agreed project plan.
Precision Cutting
CNC Machining
Quality Inspection
Project Coordination
James Zhang · General Manager
Original Engineering Guidance
Engineering Resources for Custom Parts
Practical guidance on materials, drawings, finishes, tolerances, and inspection - reviewed for real manufacturing decisions.
01
02
03
04
How to Select the Right Aluminum Alloy
Strength, machining, extrusion, corrosion, and finishing trade-offs.
How to Specify Anodized Color and Appearance
Alloy, texture, color range, samples, batch variation, and acceptance.
How to Prepare CAD Files for a Manufacturing Quote
Models, drawings, tolerances, finishes, quantities, assembly, and inspection.
How to Define Tolerances and Inspection Requirements
Critical dimensions, datums, reports, sampling, and acceptance criteria.
Before You Start Your Project
Common Questions Before an RFQ
Concise answers should resolve buyer concerns and link to the most relevant service, material, quality, or case page.
What CAD and drawing formats can I upload?
You can upload the following CAD and drawing formats:
2D CAD: DWG, DXF, DWT
3D CAD: STEP, STP, IGES, IGS, SAT, SLDPRT, SLDASM
Drawing & image files: PDF, AI, EPS, PNG, JPG, TIFF, BMP
Please note that image‑based files are only for preview and cannot be edited as CAD data.
Can you support a one-piece prototype and later production runs?
What tolerances can you hold on custom aluminum parts?
How do you manage anodized color and cosmetic appearance?
How do you handle inspection, packaging, and international delivery?
Ready To Start Your Project?
Start With Your Drawings - or Tell Us What You Need
Upload drawings, photos, or reference files if available and share your project requirements. Once the requirements are complete, most
standard RFQs are quoted within 24-48 hours. Complex or multi-process projects may take longer.
Drawings handled confidentially · NDA available on request