
Instant Quoting
Rapid Prototyping
High-Volume Production
Instant Quoting for Your insert-molding Needs
JS provides fast and accurate quotes for your insert-molding projects. With a variety of material options, surface treatments, and precision molding capabilities, our instant quoting system is designed to provide you with a tailored and competitive offer to meet your production requirements.
Access a wide range of thermoplastics and elastomers, including ABS, PC, PP, and TPE, suitable for various product applications and industry requirements.
From texturing, polishing, to painting, we offer a range of finishing options with an average lead time of 2-5 days, ensuring the right look and feel for your parts.
Achieve tight tolerances and consistent part quality, perfect for intricate designs and functional components.
Get an instant quote today.
Get instant pricing, project lead times, and DFM feedback
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ISO 9001:2015,ISO 13485:2016,AS9100D and lATF 16949:2016 Certified
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Insert-Molding

Service
Product Showcase
JS provides insert molding solutions that seamlessly combine metal or other materials with plastic to create robust, high-performance parts. This process ensures strong, precise components that are ideal for applications requiring integrated assemblies and enhanced functionality.
Tolerances
JS specializes in insert molding, combining metal and plastic components with tolerances from ±0.01 mm to ±0.05 mm. This ensures durable, high-strength bonds with exceptional precision.
Feature
Description
Maximum Part Size
1200×1000×500 mm
Minimum Part Size
5×5×5 mm
Part to Part Repeatability
+/- 0.1 mm
Mold Cavities
Single-cavity molds, multi-cavity molds, family molds
Available Mold Types
Steel and aluminum molds. Production levels below 1000, 5000, 30000, and over 100000 uses
Mold Cavity Tolerances
+/- 0.05 mm
Secondary Operations
Mold texturing, pad printing, laser engraving, threaded inserts, and basic assembly
Undercuts
Y-type, L-type undercuts
Wall Thickness
0.5 mm to 5 mm
Draft
0.5° to 2°
Ribs/Gussets
0.5 mm to 3 mm thick
Bosses
Diameter 3 mm to 10 mm
Production Options
Domestic and international
Lead Time
Starts at 5 business days, including fast quote responses with design-for-manufacturing (DFM) feedback
Materials
Most plastics, including custom sourcing and matching; see materials list below
Machines Available
Single, multi-cavity, and family molds; 50 to 1,100+ press tonnage; side actions including hand-loaded cores.
Inspection and Certification Options
Includes FAI and PPAP. ISO 9001, AS9100, ISO 13485, UL, ITAR, and ISO 7 and 8 Medical Clean Room molding.
Tool Ownership
Customer-owned with mold maintenance
Standard Lead Time
3 Business days

Material Selection
JS provides insert molding to produce strong, functional parts using ABS, PLA, and PETG. Ideal for industries like consumer products, automotive, and education, this method is perfect for low to medium volume production, offering precision and durability in every design.
Metals
- Titanium
- Steel
- Stainless Steel
- Zinc Alloy
- Chromium-Nickel Alloy
- Brass
- Copper
- Aluminum
- Bronze
- Cold Rolled Steel
- Nickel
- Silver-Tin Oxide
- Cast Iron

Titanium is known for high strength, low weight, and corrosion resistance. We process grades like Ti-6Al-4V, Ti-5Al-2.5Sn, Ti-6Al-4V ELI, and Ti-Grade 2, which are widely used in aerospace, medical implants, and sports equipment.
Plastics
- Polycarbonate (PC)
- Polyoxymethylene (POM)
- Polyphthalamide (PPA)
- Polyphenylene Sulfide (PPS)
- Teflon (PTFE)
- Polyvinyl Chloride (PVC)
- Ultra High Molecular Weight Polyethylene (UPE)
- Polyether Ether Ketone (PEEK)
- Nylon (PA)
- Glass-Filled Nylon

Polycarbonate is a transparent, highly durable plastic known for its superior impact resistance. We offer different grades suitable for eyewear lenses, medical devices, and protective equipment.
We offer customization based on your specific material requirements, if you need a material not listed here, our team can source and process ito meet your exact needs

Surface Finishing
Enhance your insert molded parts with our surface finishing services. By polishing, coating, and texturing, we improve both the aesthetics and functionality of your components, ensuring they meet the highest quality standards.

Advantages & Features
JS offers a unique blend of technology and precision, making us the perfect partner for complex insert molding projects. Whether you're working with intricate designs or require high-volume production, we have the expertise to meet your specific demands. Here’s what makes us the preferred choice for your molding needs:


Case Studies
JS’s insert molding technology is designed to deliver high-performance, durable components that combine metal inserts with plastics. Our solutions are built to withstand challenging conditions and provide long-lasting results. Discover how we support a wide range of industries with tailored insert molding solutions that maximize efficiency and reliability.

Quality Control
At JS, we specialize in insert molding to deliver products that excel in precision, strength, and performance. We combine innovative technology with meticulous attention to detail to create components that perfectly integrate into your final product, ensuring long-lasting durability and functionality.
In-Process Inspections
Before any part leaves our facility, it undergoes a thorough final inspection. We use advanced measurement tools to verify that every component meets required specifications and precision standards, ensuring the highest level of quality before delivery.
Final Inspections
Before any part leaves our facility, it undergoes a thorough final inspection to verify its quality and precision. We use advanced measurement tools and techniques to ensure that each part meets the required specifications and standards.
Precision Measurement Tools
To achieve the highest standards in insert molding, we utilize advanced measurement tools like Coordinate Measuring Machines (CMM) and specialized gauges. This guarantees that your parts are made to the tightest tolerances, ensuring consistent quality and performance.
Certified Quality Standards (ISO 9001, ISO 14001, IATF 16949, AS9100D)
Our commitment to quality is backed by ISO 9001 certification, which ensures our quality management system is consistently effective and continually improving. We also adhere to ISO 14001, IATF 16949, and AS9100D standards, ensuring we meet the needs of various industries while maintaining environmental sustainability and operational excellence.
Continuous Improvement
We believe in continuous improvement and regularly review our processes and practices to identify areas for enhancement. By investing in the latest technologies and training for our staff, we strive to maintain our reputation for quality and innovation.


Contact Us for More Information
Should you have any additional questions or require more details, feel free to reach out to us. Our dedicated team is ready to assist you with all your precision manufacturing requirements.
We know that choosing the right manufacturing process is crucial for your project's success. To help you make an informed decision, we've answered some of the most common questions about our insert molding services. Should you need additional information, our team is always here to support you.

Customer Testimonials
At JS, we take pride in delivering precise and reliable insert molding solutions. Here’s what some of our clients have to say about their experience working with us:

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