Prospiant designs, manufactures, and builds commercial greenhouses and controlled-environment growing facilities, providing integrated systems and ongoing support from its Cincinnati base. Formed in 2021 from Rough Brothers, Nexus Greenhouse Systems, and ThermoEnergy Solutions, the company draws on more than 180 years of combined greenhouse experience and operates manufacturing facilities in the United States and Canada. Prospiant also applies its large-part manufacturing capabilities to industrial powder coating, metal fabrication, and related finishing work.
OSHA 10/30 Certification
Compliance program
Columbus Controls, IncFounded in 1981 by Gary E. Hanold, Columbus Controls builds custom industrial control panels and fabricated control systems in Columbus, Ohio. The company has grown from a 1,500-square-foot Westerville shop into its own expanded facility, bringing more than four decades in business and over 100 years of combined team experience to applications ranging from data centers to automotive and oil and gas. Columbus Controls is also a UL 508A certified shop, with related expertise in MCC modifications and custom control-panel components.COLUMBUS, OH
Cincinnati Sub-Zero (CSZ)Founded in 1940 as an industrial-freezer supplier, Cincinnati Sub-Zero now manufactures standard and custom environmental test chambers that simulate demanding conditions so products can be tested for reliability. The Cincinnati company is known for its long experience in environmental simulation, its custom-engineered systems, and its patented Tundra® refrigeration technology. CSZ also fabricates and powder-coats metal parts for other manufacturers and operates as part of the Weiss Technik North America family.CINCINNATI, OH
Electrol Systems IncFounded in 1989 as an industrial electrification company, Electrol Systems is a Cincinnati manufacturer and integrator known for building control systems for material-handling operations. Its 13,750-square-foot facility brings engineering and UL panel fabrication under one roof, while its installation team supports projects nationwide.CINCINNATI, OH