Real Chemistry. Real Partnership.
For more than 50 years, Circle Prosco has delivered high-performance chemical processes that help manufacturers solve real problems, reduce total cost, and keep their lines running smoothly.
Who We Are
From Pretreatment to Process Innovation
Circle Prosco, Inc. (CPI) is a specialty chemical company that manufactures and supplies pretreatment systems, forming lubricants, passivation chemistry, and line monitoring solutions for metal forming and metal finishing operations.
We serve manufacturers across industries including automotive, agriculture, HVAC, heavy equipment, and industrial OEMs. Whether you’re expanding tubes, stamping brackets, or applying high-performance surface finishes, CPI offers products and support that simplify operations and elevate performance.
What Sets Us Apart
We Solve the Problems Others Ignore
While other suppliers push products, we focus on real-world outcomes. CPI delivers proven, practical chemistries—backed by the people and expertise to make them work in your environment.
The Cost of
Low-Cost is High
Generic chemistry often leads to more downtime, rework, and compliance headaches. CPI helps you reduce total cost by avoiding hidden risks.
Fast-Track
Innovation
Our team develops and delivers custom chemistry solutions in weeks—not months—so you can respond to customer demands and production challenges fast.
From Chemistry
to Manufacturing
We build solutions around your actual process, not just theoretical specs. Our products are easy to implement, easy to control, and designed for clean, consistent results.
Green Chemistry
Without the Headaches
CPI helps you meet environmental goals without compromising finish quality or introducing complexity into your workflow.
Philosophy
Our Service Philosophy
At the core of CPI’s customer experience is our Solution Squad—a team of technical experts dedicated to helping you solve problems quickly and keep your operations running smoothly.
From implementation support to troubleshooting, they’re hands-on, knowledgeable, and ready to jump in when it matters most.
OUR HISTORY & VALUES
Family-Owned.
Industry-Proven.
Founded in 1971 and proudly based in Bloomington, Indiana, Circle-Prosco has stayed true to its roots while expanding its reach. We’re still family-owned, still focused on manufacturing, and still committed to solving hard problems with smart chemistry.
Our values are simple:
- Help manufacturers succeed.
- Put practical results over flashy claims.
- Back everything with integrity and technical know-how.
Where It All Started
The Zirconium Shift
Redefining the Standard
LEADERSHIP TEAM
Leadership That Knows Manufacturing
CPI’s leadership team brings decades of experience in chemical formulation, manufacturing operations, and customer success. Together, they guide our commitment to delivering practical, performance-driven solutions across industries.
Made in the USA.
Built To Scale.
Our 60,000 sq. ft. headquarters includes full-scale manufacturing, in-house labs, and QA/QC operations.
We offer:
- In-house blending and packaging
- Lab-scale testing and rapid prototyping
- Responsive customer support
- Fast turnaround on new formulations and adjustments
In addition to our U.S. operations, we maintain supplier partnerships in Mexico and China to support global customers and ensure flexible sourcing options.
Contact Us