Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Hey friends,
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From Design to Delivery, We Handle It All with Precision and Care
Customized Solutions
Feedback-Driven Innovation
End-to-End Support
From Design to Delivery, We Handle It All with Precision and Care
Advanced Testing Equipment
Strict Quality Control
Fast Delivery Assurance
Fast, precise, and scalable solutions tailored to your design.
Our CNC machining crafts designs into precision parts with micron – level accuracy, delivering high – end quality.
Forging shapes metal under high pressure. Forged parts offer superior strength, toughness, and fatigue resistance.
Our casting services create metal parts with strength and durability through various methods.
We offer reliable precise sheet metal fabrication for mass production of parts with high consistency and quality.
WHY CHOOSE US
Keywin offers advanced manufacturing solutions for metal components, specializing in custom manufacturing with precision. From precision CNC machining to injection molding, casting, forging, and sheet metal fabrication, we deliver high-quality results across every stage. Our comprehensive production process ensures consistent quality and efficiency—from prototype development to full-scale production.
80+ CNC machines (incl. 21+ 5-axis), ISO 9001 & IATF 16949 certified, full in-house QC with CMM, 2.5D, coating thickness tests. Tolerances up to ±0.005mm.
Having served the outdoor, energy and automotive industries for more than three decades, we have a deep understanding of what each industry values - smarter solutions from prototype to production.
Our engineers and project managers work closely with you from DFM to final delivery. We turn your drawings into high-performance components—on time, with zero guesswork.
Over 50 countries. Hundreds of long-term partners. Our quality, responsiveness, and transparency keep clients coming back—even for their next-generation products.
Upload your CAD drawing, get quick quotes and feasibility checks, and receive precision parts—fast and reliably.
Securely upload your CAD drawing to clarify your product needs.
We analyze your design and provide pricing, feasibility, and DFM feedback.
Confirm your order to proceed with production.
We ship your finished parts after production is complete.
From Prototyping to Mass Production: Precise Testing and Optimized Design for Market Success
Turn concepts into build-ready designs and plan materials and schedule.
Stay informed throughout the design process — we align with your needs and collect feedback.
Produce working prototypes within 10 days using advanced tools for quick design validation.
Test all samples using precise equipment to ensure function, durability, and consistency.
Run low-volume batches to assess manufacturability and gather practical user feedback.
Refine your design based on pilot results and prepare for full-scale manufacturing.
Start mass production with optimized processes to ensure stable quality and fast delivery.
From Order Confirmation to Delivery: Precision Manufacturing for Your Brand
We share suggestions and revisions. Once confirmed, the project moves to production prep.
We use advanced methods to create prototypes within 7 days for fast validation.
Produce small batches to test the design in real-world use and refine as needed.
After final approval, we begin large-scale production based on your timeline.
Equipped with Advanced Technology and Techniques, We Deliver Superior Quality in CNC Machining, Forging, Injection Molding, and Sheet Metal Fabrication
Discover how Keywin’s services have transformed our clients’ projects. Read their stories below!
Whether you’re launching a new product or scaling an existing one, we provide flexible manufacturing solutions to match your pace — without compromising on quality or lead time.
Low-Volume Manufacturing
On-Demand Production
Ideal for product testing, limited production runs, and startups.
Scale up with confidence through reliable, certified processes.
ODM-Designed Precision Seatpost for Kinekt
±0.005mm tolerance & high-strength lightweight alloy, meets the performance and aesthetics requirements for extreme riding.
Industry: Cycling / Sporting Goods
Join us for a virtual walkthrough of our facilities. Discover how we bring concepts to life with high-precision equipment, expert teams, and a process built for quality at every step.
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Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.
Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.
Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.
Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.
Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.
Lorem ipsum dolor amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt labore dolore.