Bring small, complex plastic products to market fast with precision injection molding from SigmaPro Molding. We specialize in critical components that must hold tight tolerances down to 5 microns.

Partners in

No injection molding contract manufacturer in business boasts our mix of technical expertise, collaborative partnership, delivery speed or quality. That’s not to mention our niche ability to mold some of the most dimensionally complex products with tolerances as tight as 5 microns. 

We got that way by creating and sustaining a culture of fearless experimentation. We stay that way because our leaders feel the best way to grow is to be open to constructive challenges from anyone on the team. 

It sets us apart. It will help you stand out.

Plastic injection molding innovation

Care in

You’ve worked too hard to develop innovative plastic components to leave the production with someone who just doesn’t get it—or worse, doesn’t care. Engineers at SigmaPro geek out over perfecting complex parts almost as much as you do.
In other words, we strive to be the antidote to poor quality and rigid requirements that hold you back from launching the products that fuel your growth.

Our Services



We’re one of the only true “micro molding” contract manufacturers in business in the U.S., capable of holding tolerances as tight as 5 microns.



Collaborate with our engineers to perfect the design of your complex injection molded component.


Prototyping &
3D Printing

Bring new designs to life for a deeper understanding of how your product will perform. 


And We Love
Every Minute of It

Come by the shop and you’ll see why. It’s like lab coats and blue jeans. Do they clash? Who cares. We spend our business hours having fun in pursuit of technical perfection. If you’re into that, you’ll want to meet the team at SigmaPro.