
TRUSTED BY OVER 1K+ COMPANIES







Need to quickly test out the market with low-volume parts? Or want to create large quantities of production parts? Then you can't go wrong with our plastic injection molding service. At 3ERP, we produce high-quality prototype moldings from aluminum molds with quick turnaround times. Our customers can test out their designs for manufacturability, functionality and marketing, fast. We also offer plastic injection molding for your high-volume production needs.
2K+
CUSTOMERS
SERVED
29+
COUNTRIES
SERVED
1M+
PARTS
MADE
15+
YEARS
IN BUSINESS
Why EN is your best option for plastic injection molding
With years of experience creating molded plastic parts for our customers, EN provides many advantages over other companies. We offer a truly end-to-end plastic injection molding service, from design to production, always guaranteeing the highest quality.
Here are four reasons why EN is your best option for plastic injection molding â whatever the parts, whatever the scale.
Mold Making
We can take care of both mold making and injection molding. That means we can oversee part manufacturing from end to end and easily scale up production if required.
Unlock the Quantity
Most plastic injection molding companies focus on mass production. But we are more flexible, offering low-quantity prototyping, mass production of 1m+ parts, and everything in between.
Reliable Quality
Our experienced engineers can kickstart your project with expert DFM analysis and mold making, before helping you decide on the best injection molding parameters for your parts.
Unlimited Capacity
In addition to our in-house facilities, we are partnered with an extensive plastic injection molding manufacturer network. Fleets of injection machines are ready for your order today.
See why Our Customers love us
" EN is the most reliable plastic molding company we have used. After seven orders, they haven't let us down in terms of quality or delivery. I wouldn't hesitate to recommend them to other companies looking for rapid-molded parts. "

DEVIN W
Vice President
" I had a project with a couple of complex plastic molding parts. EN took care of it without any fuss: DFM confirmation, T1 samples confirmation, then the final parts arrived quickly. Overall, working with them was really easy. "

DARKO S
Project Manager
" Thanks for shipping out our molding parts so quickly! Quality was high, as expected, and the laser engraving and pad printing finishes were especially good. We plan to use EN again for plastic moldings. "

MARK PETERSON
Outsourcing Manager
Additional Plastic Injection Molding Options

Overmolding
Overmolding is a form of custom plastic injection molding during which the plastic injection molding company creates a part from multiple materials. The process adds an injection molded layer of material over an existing injection molded workpiece, producing chemically bonded parts made from multiple materials.
The overmolding process can be used to build layered parts from scratch or to add a resistant outer layer to existing plastic parts and tools, providing a more rugged exterior. Toothbrushes consisting of a solid plastic body and rubberized grip are a common example of an overmolded product.

Insert Molding
Insert molding is similar to overmolding, but the substrate is not necessarily plastic and does not have to be produced via injection molding. For example, insert molding can be used to add a plastic coating to a pre- fabricated metal part like a blade or threaded insert.
Common parts made by insert molding include sharp handheld tools, such as scalpels, which consist of a metal blade partially housed within a plastic handle. Insert molding is also frequently used to create products that incorporate bushings, clips, and fasteners.
Prototype Molding & Mass Production Molding
Delivered fast with 4 simple steps
Upload a CAD file
Simply upload your 3D models when you request a quote, along with any technical drawings, preferred materials, and finishing requirements. We'll take it from there.
Confirm Your Order
We'll assess your request, perform DFM analysis, and provide an estimate. If you're happy with the terms, we can get started on the plastic injection molding project right away.
Production
Our team of experienced engineers will get your custom plastic injection molding done fast, whether it's a one-off prototype or a larger order.
Delivery
We'll ship your injection molded plastic parts anywhere in the world. You'll get your shipment quickly, even if it's a large order of many units.
Injection Molding Plastic
Our plastic injection molding service supports the manufacture of parts in a range of molding materials. These include rigid plastics like ABS, flexible plastics like TPE, and mixed materials like PC-ABS. We can also obtain specialty materials and create custom material and pigment blends to suit your order.

Rigid plastics
The majority of injection molded parts are made from rigid thermoplastics. These include inexpensive and versatile plastics like ABS and PP, as well as naturally transparent plastics like PC and acrylic and high-strength plastics like POM. Other rigid plastics for injection molding include nylon, PET, and PS.
Plastic Injection Molding Finishes
The most convenient way to apply surface finishes to moldings is to perform any necessary finishing on the metal mold. In this way, we can give the moldings different surface finishes such as matte, high-gloss, and various textures. Secondary finishes â applied to the finished moldings â are also an option.

Matte
Plastic injection molding companies like EN can give a consistent matte finish to plastic injection molded parts â soft grip handles, for example â by carrying out techniques like sandblasting, chemical etching and EDM on the metal mold. The surface roughness of matte moldings typically ranges between 0.40 and 18.00 Ra ÎŒm.

Our
Quality promise
- GUARANTEED QUALITY EVERYTIME
Whether you're a multinational corporation or a small company making its first prototype, we'll take expert care of your injection molded parts. But don't just take our word for it: our plastic injection molding service includes material certifications, first article inspection, and full dimensional reports to make sure your plastic moldings turn out just right.
What is plastic injection molding
Plastic injection molding is a manufacturing process mainly used to make plastic parts in large quantities. Used by many industries for a wide variety of parts, plastic injection molding produces more thermoplastic parts per year than any other plastic manufacturing process.
The plastic injection process requires a metal mold and an injection molding machine. Plastic pellets are heated to melting point, then forced into the mold, where the material cools and solidifies, assuming the shape of the mold cavity.
The most common materials for plastic injection molding are thermoplastics such as ABS, nylon, and acrylic. However, it is also possible to mold thermosets and elastomers.
Plastic injection molding can produce parts in a range of sizes, from bottle caps to large automotive panels, but it is best suited to thin-walled parts, because thick sections of molded plastic are more likely to deform as they cool down inside the mold.