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 delivers custom online CNC machining services from rapid machining to high-volume production, shipping globally from our owned factories in China. With a dedicated machine park for milling, turning, and precision grinding, we handle both simple and complex parts with lead times as fast as 1 day. Backed by ISO-certified quality systems, we ensure precision and consistency for every order.
With our multi-axis milling centers, we machine tight-tolerance parts and complex geometries in a wide range of metals and plastics. We support diverse industries with capabilities that include precision mold making and component production.
CNC Milling Services
Utilizing advanced CNC lathes and mill-turn centers, we produce high-precision cylindrical, square, and hexagonal parts. From prototypes to production runs, we deliver turned parts with speed and accuracy.
CNC Turning Services
Achieve ±0.005mm tolerance in complex metal/plastic parts through single-setup, multi-axis milling. Reduce lead times by up to 60% for aerospace, medical, and automotive applications.
5-Axis CNC Machining Services
Equipped with 180+ advanced CNC centers supporting multi-axis milling and turning, we deliver complex metal and plastic components with IT6-IT8 tolerance and surface roughness of Ra ≤1.6μm.
Precision Machining ServicesWhether you need a rapid prototype or a full production run, JS Precision provides a seamless, end-to-end manufacturing partnership, ensuring consistency, precision, and speed at every stage.
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With owned ISO-certified factories in China, we provide unmatched speed, control, and quality. JS Precision's integrated manufacturing network ensures 1-day lead times for CNC parts. Equipped with multi-axis mills, lathes, and automated lines, we guarantee precise results and reliable global shipping.
From complex designs to perfect finished products, JS Precision overcomes manufacturing challenges to deliver high-quality parts to you.
Over 30 metal and plastic options are available to meet your specifications. We ensure material quality and performance for all custom CNC parts.
Excellent strength-to-weight ratio, good corrosion resistance. Ideal for aerospace, automotive, and electronics components.
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Upload Your FilesWe offer over 10 surface treatment options to meet your CNC prototyping and production part needs. From anodizing to polishing, each process optimizes part performance for specific applications.
Mechanical/chemical polishing creates reflective mirror finish without coating. Ideal for decorative metal parts.
Sandblasting/etching creates uniform non-reflective texture with anti-fingerprint properties. Used on electronic enclosures.
Electrochemical process removes micro-protrusions for ultra-smooth, corrosion-resistant surfaces. Common in medical/food-grade stainless steel.
Electric field deposits paint particles uniformly on complex shapes. Offers strong adhesion and eco-friendly process.
Electroplated chromium layer provides mirror-like finish (800-1000HV hardness). Used in automotive trim & bathroom fixtures.
Depositing 0.1-5μm gold layer enhances aesthetics and oxidation resistance. Ideal for electronic contacts/jewelry.
Chemical oxidation creates black Fe3O4 layer to reduce glare and improve rust resistance. Used on tools/machinery parts.
High-gloss black coating via spray/plating combines aesthetics and weather resistance. Applied to consumer electronics.
Hand/machine polished red copper with enhanced oxidation resistance. Used in sculptures/jewelry.
Chromate coating dyed gold for corrosion resistance and aesthetics. Applied to zinc alloy parts.
High-temperature carbon infusion boosts surface hardness (up to 60HRC). Used in gears/cutting tools.
Hard anodizing creates thick oxide layer (50-100μm) with insulation/heat resistance. For aerospace components.
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.
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.
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.
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.
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.
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.
From automotive to aerospace, JS Precision meets the exacting needs of diverse sectors with advanced engineering solutions. We partner with innovators and industry leaders alike, delivering mission-critical components for over 15,000 successful projects worldwide.
At JS Precision, we hold ourselves to standards beyond the industry norm. Our CNC machining services ensure that every CNC machined part achieves exceptional accuracy, consistency, and reliability, meeting the most demanding application and integration requirements.
Metal parts: ISO 2768-k
Plastics parts: ISO 2768-c
We manufacture and inspect ultraprecision parts per your drawings and GD&T requirements, with standard precision tolerances of ±0.02 mm and critical feature capability down to ±0.012 mm.
0.3 mm
0.3 mm
0.5 mm
CNC Milling: 4500 × 2000 × 800 mm
CNC Turning: 250 × 600 mm
CNC Milling: 3 × 3 × 3 mm
CNC Turning: 1 × 1 mm
Prototyping: 1 – 100 pcs
Low volume: 101 – 5,000 pcs
High volume: 5,000+ pcs, supported by fully automated production lines
Most projects completed within 3–5 business days.
Expedited service available for 24–48 hour delivery.
Your success depends on reliable components. Our precision CNC machining services deliver consistent, high-quality parts with a 90% first-pass yield, supporting both prototype development and production runs.
Our facilities are certified to ISO 9001, ISO 13485, ISO 14001, and IATF 16949, ensuring compliance with the highest international standards for quality, safety, and sustainability.
With over 30 dedicated quality engineers and more than 20 advanced inspection tools—including CMMs, 2D measuring systems, and XRF analyzers—we verify every dimension, material, and performance characteristic to meet your exact specifications.
From material sourcing to final inspection, each stage follows strict, documented quality control procedures. Full traceability and regular updates provide confidence in every delivery, anywhere in the world.
Optimize your parts for efficient and cost-effective manufacturing with our CNC machining design guidelines. Our engineering team provides expert design-for-manufacturability (DFM) analysis before production begins, ensuring a smooth transition from prototype to high-volume production.
Sharpinternal corners will naturally form radii
Ensures smooth transitions and prevents tool breakage.
Thread depth specifications
We produce threads to any specification, including custom requirements. any specification.
Profiles include :
Customizable geometry to suit your part's functional needs.
CNC Milling:
engraved via CNC or laser
CNC Turning:
Applied using laser marking technology
Clean, legible markings for branding or identification.
Durable, highcontrast text without affecting tolerances.
Our engineers can collaborate with you to achieve optimal manufacturability, part performance, and cost efficiency.
Consult Our Engineering Team
Our ISO certified CNC machining services produce precise, reliable parts, backed by strict quality inspection to ensure optimal fit and consistent performance.
Powered by a global network of partner CNC machine shops and advanced machining capabilities, we deliver fast turnaround—with lead times as short as 1 day for urgent projects.
From design review to final delivery, our engineering specialists provide dedicated support to maximize design efficiency, enhance part manufacturability, and ensure your project's success.
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Stay informed with the latest updates and announcements from JS Precision, Learn about our most recent projects.
Precision CNC machining is essential for aerospace components, medical implants, automotive parts, and industrial equipment. At JS Precision, we manufacture high-tolerance, durable parts that meet rigorous industry standards for performance and reliability.
Key advantages include exceptional accuracy, material versatility, and excellent repeatability. Limitations involve higher costs for complex internal geometries and longer setup times compared to additive manufacturing.
Choose CNC machining for high-strength, precision parts with superior surface finish. Opt for 3D printing for complex prototypes or intricate internal structures. JS Precision offers both services and can advise on the best solution.
We consistently achieve standard tolerances of ±0.1 mm. For high-precision requirements, JS Precision routinely holds tolerances as tight as ±0.025 mm, verified through rigorous inspection processes.
A machining center is a multi-axis CNC machine that performs milling, drilling, and tapping in one setup. This reduces cumulative error and ensures high accuracy for complex geometries through automated tool changes and coordinated movements.
Our engineers provide detailed DFM analysis, optimizing features like wall thickness, radii, and threads to enhance manufacturability, reduce costs, and shorten lead times while maintaining part functionality.
We work with aluminum, stainless steel, titanium, engineering plastics, and more. Finishing options include anodizing, powder coating, plating, and bead blasting to meet aesthetic and functional requirements.
Pricing is based on material cost, machining time, part complexity, order quantity, and surface finishes. JS Precision provides transparent, competitive quotes with detailed breakdowns.
No, we have no strict MOQ and fully support prototype orders. JS Precision offers flexible volumes from single prototypes to full production runs.
Standard lead time is 5-10 business days. Expedited services are available, reducing lead times significantly for urgent projects at JS Precision.
We implement first-article inspection, in-process checks, and final validation using CMMs and optical comparators. This ensures every part from JS Precision meets specified dimensions and quality standards.
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