glass wool felt 1.sound insulation material 2.competitive price 3.can be covered with aluminum foil 4.quick delivery Introduction: Centrifugal glass wool is a silk-like material made by fiberization in the TEL process and spraying of thermosetting resin. Glass wool is non-combustible, non-toxic, and resistant to corrosion. It has low weight by volume, low thermal conductivity, stable chemical ...