RK is the regionÍs largest mechanical contractor and has installed the HVAC, plumbing and piping systems in construction projects that have shaped ColoradoÍs landscape. Today, RK has diversified into seven business units that give construction, commercial and industrial customers a reliable single source for mechanical and electrical contracting, custom manufacturing, steel fabrication, prefabricated buildings, facilities and equipment maintenance and water treatment solutions. RK is ISO 9001:2015 Certified. RK was the 53rd U.S. business to achieve the OSHA Voluntary Protective Program (VPP) Star Mobile Workforce, the highest OSHA accreditation attainable. RK also earned the OSHA VPP Worksite accreditation, which makes RK the only company in the construction industry to achieve both OSHA VPP standings. RK is also an ASME Div. 1 and Div. 2 and AISC Certified contractor. RK is a family-owned Colorado-based firm that is also known for giving back to the community through the RK Foundation. For over half a century, clients have relied on RKÍs experience, impeccable safety and commitment to quality. With over 1,300 employees, RK is one of the regionÍs top employers and fastest growing companies. For more information, call 303.355.9696 or visit rkmi.com. Business Units ´ RK Mechanical: Mechanical contractor for HVAC, plumbing and piping in commercial construction ´ RK Steel: Fabrication and installation of structural steel and miscellaneous metals. ´ RK Energy: Skidded equipment, prefabricated facilities for oil and gas and energy. ´ RK Service: Facilities services including HVAC, plumbing, drain cleaning, electrical and more. ´ RK Electrical: Contracting, installations, repairs, energy efficiency retrofits, VFDs and more. ´ RK Water: Water treatment solutions, water equipment installation and groundwater treatment. ´ RK Mission Critical: Modular prefabricated facility construction of data centers and modular buildings.