TPI Corporation, established in 1959, is the parent company of Markel, Raywall, Fostoria, TPI Industrial Fan, HotPod, and Columbus Electric. TPI Corporation is located in Johnson City, Tennessee, manufactures electric heating, ventilation, task lighting, and control equipment under these various brand names. Value Proposition: Facilities need comfort conditioning products in order to effectively and efficiently heat and cool their operations. TPI Corporation manufactures electric heating and ventilation equipment designed to address these areas regardless of the conditions. Their products are designed for many environments from indoor to outdoor, meet OSHA standards, and are approved by ETL or UL for both U.S. and Canada.