From Prototyping to Production
Quality Parts Made
Easier, Faster
ProductInjection bridges the gap between design and manufacturing on-demand. From early prototypes to high-quality production runs, our manufacturing network and engineering expertise deliver speed, precision, and consistent quality.
Get instant quote of your custom parts, or contact our team to discuss your production needs.
Year Experience
Parts Manufactured
Manufacturing Centers
On-time Delivery
9001:2015 certified
20,000+ customers in over 120 countries & regions trust ProductInjection to manufacture their custom parts
ProductInjection Manufacturing Services from Prototyping to Production
With our own factory in Shenzhen and a strong network of vetted manufacturers across China, we offer a broad range of manufacturing capabilities — from CNC machining to injection molding, sheet metal, and 3D printing. Whether you need fast-turn prototypes or low- to high-volume production, we’re your trusted partner for complex, custom parts delivered with speed and precision.
CNC Machining
CNC milling, turning & precision machining for prototypes and end-use parts. ±0.001″ tolerance, 0.020″ thin walls, 1-day lead times.
Injection Molding
Get plastic injection molding, overmolding & insert molding with fast & production tooling. No MOQ. T1 samples in 2 weeks. Scale 1 to 1M units.
Sheet Metal Fabrication
Expert laser cutting, bending, welding & stamping. Fast, precise sheet metal prototypes to production. 3-day lead time. 0.008 in. thin walls.
3D Printing
SLA, HP MJF, SLS & SLM for functional prototypes & low-volume 3D printing. ±0.008 in. precision. 1-day lead time.
Extrusion
Offer high quality, low-cost metal extrusions with a variety of post-machining options. Rapid 2-week delivery.
Die Casting
High-volume precision die casting: Aluminum/Zinc/Magnesium/Copper. 0.03in walls, 1000+ unit batches.
Vacuum Casting
Rapid soft-tooled plastic prototypes: ±0.002″ precision, 20 parts in 15 days. Cost-effective small-batch alternative to injection molding. Ideal for fast iterations.
Wire EDM
Precision sinker & wire EDM: Sharp inside corners & thin walls. Burr-free micromachining with 0.001-0.01″ kerf. Ideal for tooling-free complex geometries.
Your Trusted Manufacturing Partner
in China. Global Shipping
Based in China, ProductInjection combines in-house production with a network of over 700 vetted local suppliers to deliver fast, high-quality on-demand manufacturing solutions. As a leading China-based hub, we provide global shipping with delivery to North America and Europe in as little as 3–10 days. With English-speaking project engineers and fast response times, we support customers across time zones to keep production running smoothly.
Facotry in Total
Customers Worldwide
Countries & Regions Served
Manage Manufacturing Smarter with Our Digital Platform
ProductInjection’s AI-driven manufacturing platform gives you full control over your custom parts production. From instant quote and DFM analysis to real-time order tracking and project management. Easily upload design files, choose materials and finishes, and get production-ready parts faster.
Skip the wait. With ProductInjection’s instant quote feature, you receive accurate pricing and detailed DFM feedback in seconds. Save time, reduce risk, and keep your project on track.
- No minimum order quantity.
- Over 100 materials and 30 finishes available.
- Flexible lead times and shipping options.
Boost team efficiency with instant quote sharing, 1-click orders, live tracking and expedited order privilege. Collaborate effortlessly while earning tiered rewards for every milestone achieved.
- Share quotes, specs, and orders with one click.
- Centralize approvals and payments to cut delays.
- Negotiate pricing and clarify specs without switching platforms.
- Enjoying monthly expedited order coupon — grow as your team levels up.
- Unlock perks as your team contributes.
Need answers fast? With ProductInjection’s live chat, get instant support from our experts and streamline your project communication.
- Quick assistance for quotes and orders
- Share files, photos, and messages instantly
- Real-time design feedback with file annotations
Take full control of your projects with a single platform that streamlines quotations, orders, and part progress tracking—ensuring quality, transparency, and a truly seamless one-stop management experience.
- Real-time production status tracking for full visibility
- Track the production progress of each part within an order.
- High-resolution inspection photos for quality assurance
- Easily manage documents, from DFM to invoices
How to Work With Us
Upload a CAD File
Start by choosing your preferred manufacturing process, then upload your design file.
Get a Quote
Next, configure project details like material, finishing option, and quantity, receive an accurate quote and DFM feedback, then place your order.
Parts Delivered!
Once production is complete and your parts pass quality inspections, they are shipped to you.
Customer Success Stories
Neck Massager
Neck Massager
Neck Massager
Neck Massager
Neck Massager
What Our Clients Say About Us
★ ★ ★ ★ ★
Based on 661 reviews
★ ★ ★ ★ ★
Verified
The team at Productinjection is amazing! They helped me improve my design to produce better results with injection molding versus machining and 3D printing. We are already working on our next project with them!
David
Entreprenuer
★ ★ ★ ★ ★
I accomplished many project with them, work and hobby. They’re always fast to respond, to quote your projects and help for every problem. They have so many kind of manufacturing 3d models for every need. Fast shipping and strong packaging to protect the products. From company to individual hobby, Productinjection is the best answer. Mario Mocio & Roberto Mocio (Italy)
Roberto
★ ★ ★ ★ ★ Verified
We started using Rapid Molding because they could make our parts quickly without compromising our designs and at a fair price. We’ve come back because they are dependable and the quality is excellent.
Erik
Product Manager
★ ★ ★ ★ ★ Verified
I send all my plastic parts to Productinjection for prototype molding and/or bridge tooling. I get accurate parts for testing and the price is right. Plus their bridge tools often satisfy our production molding requirements.
Daniel
Mechanical Engineer
★ ★ ★ ★ ★
I have ordered several times from this company and they have done a good job every time. I’m especially happy with their customer service. Kevin, the representative assigned to me, is very helpful, and if I have a question or special request, he is always ready to help. Great job Product Injection
kyazmusic
★ ★ ★ ★ ★Verified
The sales engineer Bob was excellent and very responsive. Very happy with the quality and delivery time of the machined parts.
Christoph V.
Project Manager
★ ★ ★ ★ ★Verified
Super helpful sales engineer. helpful in tweaking my part to squeeze the best economy for my buck. do not hesitate to use Product Injection! i’ve tried other places, and they don’t even come close in price and quality. give Rapid Direct a try, and you will not regret it.
Joseph Martzig
Scientist
★ ★ ★ ★ ★Verified
Wow, Product Injection is great! It’s so simple and quick. I had my parts in less than 10 days. It’s easy to get a quote, order, and track. The parts were to spec and a perfect fit. They have earned my repeat business. Thanks, Product injection Team!
Brian Stowell
Aerospace Engineering
★ ★ ★ ★ ★Verified
These guys are good. The quality and finish of my 1/2” aluminum mount is as good as it gets. The anodizing is perfectly uniform and the tolerances are right on the money. I couldn’t be more satisfied. Customer service was prompt and helpful throughout the process and shipping was reasonably fast considering it came all the way from Shenzhen. I’ll be using Product Injection for all my future parts.
Phillip Hillard
Senior Manager
★ ★ ★ ★ ★Verified
Excellent service, meticulously manufactured parts at an affordable pricing. Truly great value!
Zhong Han
Director
Showing our latest reviews
End-to End Solutions for New Product Development
More than just manufacturing. Productinjection offers full-cycle product development solutions from design and prototyping to production and packaging. We help innovative companies worldwide to bring products to market easier, faster.
Project Initiation & Design
From concept to manufacturable design, our team helps global brands turn ideas into ready-for-prototyping solutions.
Concept sketches, high-quality product renders, and appearance specification documents.
🚩 Mechanical Design
Detailed structural 2D/3D drawings and engineering documentation, optimized for manufacturing feasibility.
🚩CMF Design
Color, material and finish planning to align aesthetics with functionality and durability.
🚩Cost Estimation
Design-stage cost forecasting and customized cost-reduction plans for your target market.
Prototyping & Low Volume Production
Our massive network support prototyping and low volume production needs, delivering accurate testing and manufacturability feedback with fast lead times.
Material selection, DFM analysis, structural optimization, and process optimization recommendations.
🚩 Assembly & Testing Support
Assembly guidance, process sequencing, EVT testing plan, EVT&DVT phase summary reports.
🚩 Low Volume Production
Conduct small-batch manufacturing validation using final inspection reports and production summaries. Quality control plans with standards and methods.
Mass Production
We help businesses scale efficiently by integrating trusted suppliers and managing production with full transparency and quality control.
Conduct supplier evaluation and comprehensive reports.
🚩 Raw Material Procurement & Management
Assist in developing procurement plans; inspect raw material quality.
🚩 Technical Support
Offer technical solutions to facilitate mass production, optimize processes, and enhance quality control.
🚩 Cost Control & Delivery Management
Assist in controlling costs and timelines, with estimates to support project goals.
Packaging
Our team supports both product and packaging manufacturing, ensuring your goods arrive safely and professionally.
Includes 2D and 3D drawings.
🚩 Packaging Supplier Management
Evaluate packaging suppliers and provide assessment reports.
🚩 Sample Testing
Provide sample inspection reports.
🚩 Packaging Execution
Offer packaging production plans, raw material lists, and final production summaries.
Where Quality Meets Reliability
in Custom Manufacturing
ProductInjection’s team of over 30 quality engineers conducts thorough inspections at every stage including pre-production, in-process, and final inspections to ensure a 90% first-pass yield. Our ISO-certified processes guarantee reliable and high-quality parts from prototyping through full production.
Advanced Inspection Equipment
We use more than 20 types of inspection tools including CMM, 2D measuring instruments, XRF analyzers, gauges, micrometers, and calipers to check part dimensions, material quality, and surface finish.Comprehensive Inspection Documentation
We provide detailed inspection reports such as first article inspection (FAI), RoHS compliance certificates, dimensional measurements, and functional test results to support your quality management.
Certified Manufacturing Partner
Holding certifications including ISO 9001:2015, ISO 13485, ISO 14001, and IATF 16949, ProductInjection is a trusted partner for industries with strict quality requirements such as automotive, medical devices, and consumer electronic.
Manufacturing Resources
Seven Alternatives to Injection Molding for Small Run Projects
“Published in Productinjection”
Sharp Corners in Injection Molding: Challenges, Guidelines, and Best Practices
“Published in Productinjection”
Understanding the Advantages of 5-Axis CNC Machining
“Published in Productinjection”
