Dear Y. M. Desta: Please visit our home page at http://www.P84.com. Imi-tech Fibres is the only manufacturer, world-wide which produces polyimide fiber. Imi-Tech also produces a polyimide foam for insulation purposes currently used by Navy ships and aircraft insulation. If you have any further questions, please contact us at P84@Kersur.net. Sincerely, Ken Spindola National Sales Manager Imi-Tech Fibres