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
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15+Years Experience
300,000+Precision Parts Delivered
1000+Customer Service
99.2%On-Time Delivery
ISO9001:2015 Certification

Trusted bynumerous companies

ABB
BMW
Bombardier
Electrolux
FLIR Systems
Google
Lamborghini
Tesla
ABB
BMW
Bombardier
Electrolux
FLIR Systems
Google
Lamborghini
Tesla

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.

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.

CNC Machining: Aerospace Complex Bracket

CNC Machining: Aerospace Complex Bracket

Core Technological Challenges

Thin-wall (0.8mm)
deformation control
High-precision hole system
(±0.02mm)

Our Solution

5-Axis CNC Milling
Completes complex thin-wall structures in one setup to ensure rigidity.
Optimized Machining Strategy
Uses high-speed milling and specialized tools to control heat and force.
Precision Finishing & Inspection
Achieves final accuracy within ±0.015mm with in-process measurement.
Injection Molding: Automotive Intricate Interior Trim

Injection Molding: Automotive Intricate Interior Trim

Core Technological Challenges

Complex ribs & undercuts
(0.6mm)
Class-A surface finish
(Ra ≤0.4μm)

Our Solution

Hot-Runner System Design
Ensures uniform filling to eliminate flow marks and weld lines.
Gas-Assisted Molding Process
Prevents sink marks in thick sections and reduces part weight by ~15%.
High-Gloss Mold & Temperature Control
Achieves a ready-to-use, flawless surface directly from the mold.
Metal Casting: Large Marine Engine Block

Metal Casting: Large Marine Engine Block

Core Technological Challenges

Heavy casting (2.3T)
with shrinkage risk
Strict internal defect
standards

Our Solution

Solidification Simulation & Design
Predicts and prevents shrinkage defects during the design phase.
Controlled Sequential Solidification
Uses custom risers and chills to achieve a sound, dense casting.
Full-Process Quality Monitoring
Ensures casting density ≥98% and compliance with classification society standards.
Sheet Metal Fabrication: High-precision Electronic Chassis

Sheet Metal Fabrication: High-precision Electronic Chassis

Core Technological Challenges

16 precise bends
(±0.5° tolerance)
Flatness ≤0.2mm
scratch-free surface

Our Solution

High-Precision Laser Cutting
Provides ±0.05mm positioning accuracy for perfect blank preparation.
Multi-Stage CNC Bending with Compensation
Calculates and compensates for springback to achieve accurate angles.
Dedicated Fixture & Non-Marking Handling
Protects the surface finish and ensures final assembly precision.
3D Printing: Medical Customized Implant

3D Printing: Medical Customized Implant

Core Technological Challenges

Porous biomimetic structure
(300-500μm)
Biocompatible Ti-6Al-4V
fatigue strength >500MPa

Our Solution

Electron Beam Melting (EBM)
Builds complex, internal porous structures layer by layer in a vacuum environment.
Topology Optimization & HIP Treatment
Enhances mechanical strength and eliminates internal voids through Hot Isostatic Pressing.
Medical-Grade Post-Processing
Electro-polishing achieves surface roughness of Ra<5μm, meeting implant-grade biocompatibility requirements.
Gear Machining: High-Speed EV Transmission Gear

Gear Machining: High-Speed EV Transmission Gear

Core Technological Challenges

Extreme Precision
Profile accuracy ≤ ±2µm to meet DIN Class 4 standard.
High Performance
Must withstand 15,000 rpm while ensuring low noise (<75dB).

Our Solution

CNC Gear Grinding
Worm wheel grinding with CBN tools achieves DIN Class 3 accuracy.
Dry Cutting & In-Process Inspection
Reduces cycle time to 3 min/part with real-time compensation.
Surface Enhancement
Micro-peening extends fatigue life by over 30%.

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.

World Map Background

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.

20,000+
Customers Worldwide
30,000+
Precision Projects Delivered
4000㎡
Total Factory Area
CNC Machining Factory

CNC Machining Factory

CNC Machining Factory

Established2014
Production Capacity300+ Machines
LocationDongguan
Sheet Metal Fabrication Workshop

Sheet Metal Fabrication Workshop

Sheet Metal Fabrication Workshop

Established2016
Production Capacity60+ Machines
LocationDongguan
Injection Molding Shop

Injection Molding Shop

Injection Molding Shop

Established2017
Production Capacity30+ Machines
LocationShenzhen
3D Printing Factory

3D Printing Factory

3D Printing Factory

Established2020
Production Capacity250+ Machines
LocationShenzhen
Vacuum Casting Shop

Vacuum Casting Shop

Vacuum Casting Shop

Established2023
Production Capacity20+ Machines
LocationDongguan
Die Casting Factory

Die Casting Factory

Die Casting Factory

Established2019
Production Capacity20+ Machines
LocationDongguan

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.

Why Leading Enterprises Choose Smart Factories Over Pure Manufacturing Platforms?

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.

Modular Smart Speaker Enclosure: From Acoustic Design to Mass Production
Consumer Electronics

Modular Smart Speaker Enclosure: From Acoustic Design to Mass Production

JS Precision made custom quality parts simpler and faster by integrating engineering, manufacturing, and supply chain. Aligning acoustic design, thermal performance, and manufacturability transformed a complex concept into a high-fidelity, mass-producible product.

40% Faster
Acoustic Prototyping & Tuning Cycle
30% Saved
Tooling and Assembly Cost
Read Full Case Study
Precision Combustion Components for Next-Generation Jet Engines
Aerospace

Precision Combustion Components for Next-Generation Jet Engines

JS Precision delivered mission-critical combustion parts for a leading aerospace manufacturer. We employed advanced multi-axis CNC machining with nickel-based superalloys to achieve components that withstand extreme thermal stress and precise aerodynamic tolerances.

7–10 Days
Lead Time
±0.05 mm
Tolerance
Read Full Case Study
JS Precision × Advanced Robotics Lab: Mission-Critical Actuator Housings
Robotics

JS Precision × Advanced Robotics Lab: Mission-Critical Actuator Housings

This collaboration highlights how precision manufacturing enables next-generation robotic agility. By delivering high-accuracy, high-strength components for dynamic robotic systems, JS Precision helps turn advanced concepts into reliable, high-performance reality.

25%
Shorter Lead Time
±0.02 mm
Tolerance
Read Full Case Study
JS Precision × Alpine Motorsport: Precision-Forged Suspension Components
Automotive

JS Precision × Alpine Motorsport: Precision-Forged Suspension Components

JS Precision supplies critical suspension uprights and control arms for Alpine Motorsport's GT racing program. Our high-strength, precision-machined components enhance handling and reduce weight for consistent on-track performance.

±0.04 mm
Machining Tolerance
18%
Weight Reduction
Read Full Case Study
Sebastian Bachhofer Partners with JS Precision to Manufacture High-Pressure Hydraulic Valve Bodies
Industrial Equipment

Sebastian Bachhofer Partners with JS Precision to Manufacture High-Pressure Hydraulic Valve Bodies

Sebastian Bachhofer, a senior systems engineer, utilized JS Precision's advanced 5-axis CNC machining to produce precision valve bodies that ensure reliable sealing and fluid control under extreme pressure.

5-axis
CNC Machining
4 Days
Lead Time
Read Full Case Study

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
Prototyping & Small-Batch Production
Large-Scale Production
Packaging & Global Logistics

Product Design Optimization

We help you solve manufacturing feasibility issues early in the production of new products, optimizing costs and performance.

Product Design Optimization
  • 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.

Altimeter
Contour Measuring Instrument
Optical Projector
Three-dimensional Measuring

Latest News

Stay informed with the latest updates and announcements from JS Precision. Learn about our most recent projects.

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.