Ceramic fiber paper is produced by ceramic fiber, binder and some additive through wet process, with the characteristics of stable chemical performance, resistance to most of the erosion of the chemicals. The physical property like refractory and insulation keep same when meet with oil, water or steam. The paper is with smooth furnace and good flexibility, can be cut into suitable size. Besides, YESO ceramic fiber paper has excellent dielectric strength; the binder will be burned out when fired.