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4Liberty is a leading technical & professional services firm focused on energy & infrastructure. We manage large scale programs and projects for diverse clients across North America. We help utilities through the energy transition necessary to meet customer expectations, adhere to government mandates, and reach sustainable goals. We help commercial, government, and municipal customers implement the modern infrastructure needed to bolster security, improve connectivity, and ensure environmental and social justice.
AAON, Inc. is a prominent manufacturer and designer of heating, ventilation, and air conditioning (HVAC) equipment, established in 1988 in Tulsa, Oklahoma. The company has expanded its capabilities through strategic acquisitions and growth initiatives, enhancing its product range and manufacturing processes. AAON offers a diverse selection of engineered HVAC solutions tailored for various industries. Their product lineup includes semi-custom and custom rooftop units, data center cooling solutions, cleanroom systems, air handling units, and geothermal heat pumps, among others. These products are designed to meet the specific needs of commercial and industrial buildings across sectors such as healthcare, education, hospitality, and manufacturing. Over the years, AAON has achieved significant milestones, including its initial public offering in 1991 and various acquisitions to bolster its technology and product offerings. The company continues to expand its facilities to accommodate growing demand, solidifying its position as a key player in the HVAC market.
With a legacy of achievement and innovation, R.H. Sheppard Cp., Inc. is a global leader in power steering and diesel engine pump technologies for the commercial vehicle industry, with the introduction of the D-Series family of power steering gears and the continued development of the M-Series. Today Sheppard continues to develop and introduce new steering system products, including miter and T-boxes, miter columns, steering columns, and other linkages. Sheppards headquarters campus is in Hanover, Pa., where it conducts engineering, testing, manufacturing, remanufacturing, and distribution. It also operates a machining facility in Wytheville, Va., along with an R&D Center in Shelby Township, Mich.