hth companies, based in Union, Missouri, delivers industrial cleaning, insulation, and scaffolding services to commercial and industrial clients across the Midwest. Established in 1984 as a merit-shop mechanical insulation company, hth companies has expanded its offerings to include scaffold erection, industrial cleaning and maintenance, welding, pipefitting, and confined space rescue. With a headcount of 313, the company supports a range of industries with specialized solutions tailored to complex operational environments. Rooted in a merit shop philosophy, hth companies emphasizes rewarding skills, productivity, and quality workmanship. The organization is guided by a vision to foster employee growth and development, ensuring that team members reach their full potential while consistently delivering quality work to customers. With four decades of experience, hth companies continues to uphold its commitment to high standards and professional service in the construction sector.