Advance Aero-Tech Inc

Sigma Thermal designs, engineers, supplies, and services process heating systems for multiple industries. Our products include thermal oil and thermal fluid heating systems, indirect process bath heaters, electric process heaters, biomass-fired energy systems, direct fired process heaters, system automation, parts, retrofits/upgrades, and support services.

Steel LLC is a structural steel fabrication company that provides steel products and related services to commercial, industrial and institutional building developers, general contractors and property owners throughout southeastern United States. The company provides project planning and engineering, installation, erection and delivery services. It also offers production equipment, design and management information and accounting system support. The company has computer-aided design and detailing and 3-D modeling capabilities. Steel LLC is certified by the American Institute of Steel Construction and the American Welding Society for complex steel structures. The company manufactures more than 125,000 tons of structural steel annually. Steel LLC is owned and operated by FabSouth, which is a steel manufacturing and fabrication company established in 2004. Steel LLC is headquartered in Scottdale, Ga.

Founded in 1927, Rheem Manufacturing Company offers a range of water heaters and warm air furnaces. It is a privately held manufacturing company that is one of the leading producers of air conditioning systems in North America. The company provides a variety of swimming pool heaters and commercial boilers. It serves customers in the residential and commercial sectors. The company has manufacturing facilities in Alabama, Arkansas, Georgia and California. It offers products under the Ruud brand. The company additionally provides installation services. Its manufacturing facilities have received ISO 9001 certifications. Rheem Manufacturing Company is a part of Paloma Industries, which also owns and operates Raypak.