Custom Parts, Connected Manufacturing
One Partner . Six Connected Capabilities
Manufacturing Capabilities
Start with the part you need, then choose the process that creates its shape and the secondary work that makes it ready to use. JUNCHU coordinates six connected service areas, with a focus on aluminum components and the metal or plastic parts that complete an assembly.
CNC Machining
Milling for pockets, faces and hole patterns; turning for shafts, bushings and threads. Suitable for drawing-based prototypes, fixtures and repeat-order metal or plastic parts.
Custom Extrusion
Profiles with a constant cross-section for frames, rails, housings and tubes. Combine die review with cut lengths, drilled or tapped features, anodizing and assembly.
Sheet Metal Fabrication
Laser-cut blanks formed into panels, covers, mounting brackets and enclosures, with joining, inserts, edge finishing and coating planned around the finished part.
Surface Finishing
Anodizing for suitable aluminum parts, powder coating for specified color and texture, and other substrate-compatible treatments for appearance or function.
Injection Molding
Resin and tooling development for repeatable plastic covers, housings, clips and fittings. The route includes design review, trial samples and production approval.
Mechanical Assembly
Machined, extruded, formed and molded components combined with specified hardware into frames, housings or other mechanical subassemblies.
Choose a process
around the part.
CNC machining removes material for detailed features.Extrusion creates a repeated profile section.Sheet fabrication cuts and forms thin stock.Molding forms plastic parts in a dedicated tool.Quantity, geometry and final fit guide the choice.
Aluminum Alloys
Stainless Steel
Carbon Steel
Brass & Copper
POM
Nylon
Project-specific plastics
Anodizing · Coating · Plating · Appearance Control
Confirm finish specification, masking, color, surface zones and dimensional
impact during quotation.
MULTI-PROCESS PROJECTS
One project. Fewer handoffs.
An aluminum enclosure may start as an extrusion, receive CNC-machined openings and threads, then be anodized and fitted with covers and hardware. We coordinate the drawing revisions, mating dimensions and process sequence so each operation supports the final assembly.
01
02
03
04
Profile
Create the main cross-section or formed shape
Machine
Add pockets, holes, threads and precise interfaces
Finish
Apply the specified color, texture or protective treatment
Assemble
Fit covers and hardware, inspect and protect for shipment
Before You Start Your Project
Manufacturing Route Questions
Understand how geometry, quantity and finished interfaces connect the six service areas.
How should I choose the main manufacturing process?
Start with geometry and quantity: CNC machining creates detailed features from stock; extrusion creates a repeated aluminum section; sheet fabrication cuts and forms thin material; injection molding uses a dedicated tool to form repeated plastic parts. Consider design stability, stock availability, finish and assembly requirements before selecting the route.
Can a project combine several manufacturing processes?
Yes. An enclosure can combine an extruded body, machined openings, formed end plates, a selected finish and mechanical assembly. Identify the process sequence, drawing revisions, critical interfaces and inspection points. The quotation defines the operations and responsibilities included in the project.
How are prototype and production routes compared?
A development quantity may suit machining from available stock while a stable repeated section or molded design may justify dedicated tooling. Compare tooling, sample approval, secondary work and expected repeat quantities together. An early prototype should be checked for the functions it represents; later production may require validation using the intended process.
Which interfaces need review before machining and finishing?
Review locating faces, hole patterns, threads, sliding clearances and surfaces that will be coated or masked. A feature acceptable before finishing may change during treatment. Identify the final measurement condition and mating components so each manufacturing step supports the agreed finished fit.
What is included in a coordinated manufacturing quotation?
Confirm the component revisions, material grades, quantities and operations to be supplied. Separate tooling or fixtures, secondary work, assembly hardware, inspection records and packing requirements. Resolve open technical points before production release, including any separately agreed testing or documentation.
Ready To Start Your Project?
Start With Your Drawings - or Tell Us What You Need
Share drawings, photos or sketches with your quantity, material, finish and target date. We review the available information, clarify technical requirements and confirm quotation timing. Complex or multi-process projects may require additional review.
Discuss confidentiality and NDA requirements before sharing sensitive project files.