
FROM PROTOTYPE TO PRODUCT, FAST & AFFORDABLE
Custom Quality Parts. Made Simpler and Faster.
- 30% Price Cut | Own Factory, Lowest Prices Direct from the Source
- 24/7 Rapid Sampling | Online Quote, Delivery in as Little as 1 Day
- Hassle-Free Cross-Border Delivery | Global Customs Clearance Included, One-Stop Delivery
- Free DFM | Expert Collaboration, One-Stop Solution
- Full-Process Control | Full-Stack Partner from Prototype to Mass Production
Trusted bynumerous companies










JS Precision has produced over 300,000 unique parts for more than 1,000 clients worldwide, helping bring their custom projects from concept to reality.
JS Precision | On-Demand Custom Manufacturing Services
With advanced manufacturing facilities and a rigorously vetted partner network, we provide comprehensive precision manufacturing solutions — specializing in CNC machining, sheet metal fabrication, 3D printing, and injection molding. Whether you require rapid prototypes or high-volume production, we are your trusted partner for complex, custom parts delivered with speed, precision, and consistent quality.

CNC Machining
Precision CNC milling, turning & multi-axis machining for prototypes and production. ±0.025 mm tolerance, 0.5 mm thin walls, 1-3 day lead time.

Injection Molding
Plastic Injection Molding, overmolding & insert molding with rapid or production tooling. No MOQ. First samples in 10 days. Scale from 1 to 1M+ parts.

Sheet Metal Fabrication
Laser cutting, bending, welding & stamping for prototypes to volume runs. 3-5 day turnaround. 0.2 mm thin material capability.

3D Printing
SLA, SLS, MJF & metal 3D printing for functional prototypes and low-volume production. ±0.2 mm accuracy. 1-2 day build time.

Extrusion
Custom metal extrusion profiles with precision post-machining options. Cost-effective solutions for structural and functional parts. Fast-turn production with 14-day lead time.

Die Casting
High-volume precision die casting in aluminum, zinc, and magnesium alloys. Thin-wall capability down to 0.03". Ideal for 1000+ unit production runs.

Vacuum Casting
Rapid urethane prototyping using silicone molds. ±0.002" accuracy, suitable for 20-piece pre-production batches. Turnaround within 15 days.

Gear Machining
Precision cutting of complex contours and sharp internal corners. Kerf widths from 0.001" to 0.01". No tooling required, ideal for hardened materials.
Precision manufacturing of high-difficulty parts
From complex designs to perfect finished products, JS Precision overcomes manufacturing challenges to deliver high-quality parts to you.
What Our Clients Say About Us
A customer's words mean more than ours see what our satisfied customers have saidabout how we fulfilled their requirements.

Your High-Precision Manufacturing Partner in China. Global Delivery in 3–10 Days.
Based in China, JS Precision leverages over 600 certified suppliers to provide fast, reliable manufacturing of tight-tolerance parts. We serve robotics, aerospace, and medical industries with express global shipping. Our English-speaking engineers offer 24/7 DFM support, ensuring quality and smooth communication from design to delivery.
Why Leading Enterprises Choose Smart Factories Over Pure Manufacturing Platforms?
At JS Precision Smart Factory, you work directly with project engineers. This ensures zero information loss and a response within 15 minutes, guaranteeing your technical requirements are accurately understood and addressed.
We adhere to factory-direct pricing, eliminating platform commissions and middleman markups. Quotations provide a complete breakdown covering materials, machining, shipping, and duty estimates, ensuring clarity and cost predictability.
We provide professional Design for Manufacturability (DFM) analysis and process optimization solutions. Our engineering team, with over 15 years of experience, acts as your extended R&D department to collaboratively solve technical challenges.
Your parts ship directly from our smart factory. We handle the entire supply chain—customs declaration, sea/air freight logistics, destination port clearance, and last-mile delivery. You simply receive and inspect the qualified parts, with no hassle throughout the process.

How to Work With Us
Upload Your Design
Upload your CAD files in formats such as STEP, IGES, or STL. Our engineering team will promptly review your design and provide manufacturability feedback.
Review Quote & Confirm
Select your preferred materials and finishing options. You will receive a detailed quotation with expert recommendations within 24 hours. Confirm your order to begin production.
Receive Your Parts
We manufacture your parts to specification, conduct quality inspections, and arrange delivery to your specified address within the agreed timeframe.
Customer Success Story
JS Precision partners with manufacturers across automotive, aerospace, medical, electronics, and robotics industries. From startups to global leaders, we deliver precision CNC machining and rapid prototyping solutions built for critical applications.
End-to-End Precision Manufacturing Solutions
JS Precision delivers comprehensive manufacturing solutions from rapid prototyping to volume production. We specialize in helping innovative companies accelerate product launches through high-precision machining, engineering expertise, and reliable global delivery.
Product Design Optimization
We help you solve manufacturing feasibility issues early in the production of new products, optimizing costs and performance.

Design & Engineering
Collaborative design support and manufacturability analysis to optimize your product for production.
Precision Machining
Multi-axis CNC machining with tight tolerances for complex components in aerospace, medical, and industrial applications.
Process & Quality
Complete process planning with stringent quality control ensures consistent, traceable manufacturing results.
Cost & Delivery
Transparent cost analysis and reliable lead times help you plan effectively and meet market deadlines.
Precision Engineering, Trusted Custom Manufacturing
JS Precision integrates quality into every phase. Our team enforces rigorous inspections from pre-production to final delivery, ensuring high first-pass yield and reliable timelines. Through controlled, ISO-aligned processes, we guarantee consistency from prototype to volume production.
Advanced Inspection & Validation
Utilizing precision equipment like CMM, 3D scanners, optical comparators, and surface testers, we verify every dimension, material, and finish—ensuring components meet exact specifications.
Complete Quality Documentation
We supply detailed reports including FAIR, material certifications, compliance records, and test data, providing full traceability for your quality management.
Your Certified Manufacturing Partner
Certified to ISO 9001:2015, ISO 13485, and IATF 16949, JS Precision serves demanding industries including automotive, medical, aerospace, and electronics with engineered manufacturing solutions.




Latest News
Stay informed with the latest updates and announcements from JS Precision. Learn about our most recent projects.
JS Precision FAQs
Our engineering team provides a complimentary Design for Manufacturability (DFM) analysis. Using CAD software and simulation tools, we review tolerances, material selection, and assembly fit to optimize your design for precision machining, ensuring both feasibility and cost efficiency.
We combine engineering expertise with full in-house capabilities—from CNC machining to finishing. Our strict quality control, ISO-certified processes, and dedicated project support ensure reliable, high-accuracy parts delivered on time, with full traceability throughout production.
Lead times depend on part complexity and order volume. Prototypes can be delivered in as little as 5–7 days, while production runs typically take 2–4 weeks. We also offer expedited services to meet urgent deadlines without compromising quality.
We offer a wide range of materials including aluminum, stainless steel, titanium, and engineering plastics. Available finishes include anodizing, plating, powder coating, polishing, and sandblasting, with custom color matching upon request.
Yes. With every order, we provide complete documentation including material certifications, First Article Inspection Reports (FAIR), 3D inspection data, and performance test records to ensure full quality traceability and compliance.
Absolutely. We adhere to RoHS, REACH, and other international regulatory standards. Our facilities are certified to ISO 9001:2015 and ISO 13485, ensuring environmentally compliant and quality-assured manufacturing processes.
We stand by our quality promise. In the rare case of non-conformance, we conduct a root-cause analysis, communicate transparently, and promptly rework or reproduce the parts at no additional cost to ensure your specifications are fully met.
Yes. Our advanced multi-axis CNC machines and CMM inspection systems enable us to produce components with complex geometries, thin walls, and tight tolerances down to ±0.005mm, meeting demanding aerospace, medical, and automotive standards.






























