From CAD files to production-ready prototypes.
CNC Machining, 3D Printing, Silicone Casting, Surface Finishing, and Inspection — All Under One Roof
From early-stage prototypes to small-batch validation, JierChen provides one-stop prototype manufacturing services with engineering review, process planning, finishing, assembly, and inspection support.
For qualified projects with complete CAD files and drawings, engineer-reviewed quotations can be provided as fast as 24 hours. Complex parts, multi-process assemblies, tight tolerances, or special finishing requirements may require additional DFM review before quotation.
One partner for the whole development arc.
Choose by stage and quantity — we machine, print, cast and tool in-house, so a design moves from validation to volume without leaving the building.
SLA 3D Printing
1–3 day lead time
±0.1–0.2 mm
Concept & fine detail
CNC Machining
3–7 day lead time
min ±0.01 mm
True engineering materials
Silicone Casting
5–10 day lead time
Shrink 0.3–0.5%
Production-like finish
Steel-Mold Injection
4–8 week lead time
±0.05–0.20 mm
Repeatable & cost-efficient
Zero hand-offs. One roof.
Design to verified prototype with no vendor transfers and no lost time.
One roof
Machining, casting, finishing & QC in a single continuous workflow.
24-hour quote
Engineer-signed quotes with a firm lead-time commitment.
CMM-verified
Every part ships with a dimensional inspection record — measured, never guessed.
Export-ready
ISO 9001 & D-U-N-S® registered, trusted across 10+ countries.
Real parts, real programs.
From research robotics to AI wearables, thermal components and consumer-electronics enclosures — see how we de-risk the path from drawing to demo.
Dynamic Walking Leg Assembly | CNC-Machined Robotics Prototype
A fully articulated 6-DOF bipedal robot leg assembly featuring CNC-machined AL 6061 load-bearing joints. Critical shaft-and-bore interfaces were machined and CMM-verified to ±0.001 inch fit tolerance, ensuring precise alignment and reliable mechanical movement for robotics research and display applications.
Robotics
AI Glasses Prototype | ABS & PC Functional Appearance Model
Functional AI glasses prototype made from ABS and PC materials, featuring exterior appearance parts, movable mechanical assembly, surface painting, and product-like finishing for design validation.
AI wearables
CNC-Machined Aluminum Heat Sink | AL 6061 Thermal Management Component
A precision CNC-machined AL 6061 aluminum heat sink featuring a high-fin-density structure for efficient thermal dissipation. Designed for thermal management applications in electronics, robotics, industrial equipment, and prototype validation.
Thermal management
USB-C Dock Enclosure | CNC-Machined AL 6061 Aluminum Housing
CNC-machined AL 6061 aluminum Thunderbolt dock enclosure with hairline brushed finish, anodized surface treatment, and laser-engraved markings for consumer electronics prototype validation.
Consumer electronicsMeasured, never guessed.
A five-gate QC process and a full metrology lab. Every part ships with a report.
CMM · Keyence±0.01 mm tolerance
X-Rite Ci60Color-difference data
2.5D visionOptical measuring system
Micrometer±0.001 mm resolutionTrusted from prototype to launch.
“They approached our robotics prototype like a true manufacturing partner from the first design review. The critical shaft-and-bore interfaces on the bipedal leg assembly were CMM-verified to ±0.001 inch fit tolerance on the first article.”
“JierChen helped us complete clear PC parts, dyeing, surface finishing, and assembly for our AI wearable prototype in two weeks. Having one prototype manufacturing partner reduced hand-offs, saved time, and kept the design validation process moving.”
“For our precision machined components, we received engineer-reviewed quotations, clear manufacturability feedback, and inspection documentation for critical dimensions. When CMM reports are required, they provide the data our sourcing and QA teams need.”
Credentials you can verify.
Turn your design vision into a production-ready prototype.
Prototype faster. Validate smarter. Launch better.
Upload your CAD →
