Aspen Aerogels' insulation products -- which look like thin, flexible blankets -- represent a new breed of thermal insulation. Its two product lines, Cryogel and Pyrogel, are used by industrial companies to keep pipes and storage tanks at certain temperatures and protect equipment from water and fire damage. Customers have included ADM, Chevron, Exelon, Exxon Mobil, NextEra Energy, Petrobras, and Shell. Its Spaceloft brand insulation, develop with BASF's Construction Chemicals division, is used by the building and construction market to insulate walls and roofs. Aspen held an IPO in mid-2014.