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Started in 1954 as a small business by innovative civil engineers Reuben Karol and Pat Warner, Karol-Warner has grown to be recognized internationally for its expertise and experience in designing and manufacturing materials testing equipment that serves the geotechnical and highway/infrastructure construction industries. Its first major piece of equipment, the Karol-Warner CONBEL™ Pneumatic Load Frame is still widely-used today. Through the decades this piece of equipment has been enhanced with the latest technological advances. Listening to what customers have to say has always been a focus of the family-owned business, and in fact, has contributed to the design and manufacture of many new products.

Karol-Warner Questions

The Karol-Warner annual revenue was $6 million in 2026.

1 people are employed at Karol-Warner.

Karol-Warner is based in Lewis Center, Ohio.

The NAICS codes for Karol-Warner are [33, 334].

The SIC codes for Karol-Warner are [382, 38].

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