Rigid graphite board & Carbon and graphite felt Manufacturer. Our products are mainly used in insulation in high-vacuum and inert atmosphere furnaces. This kind of high-vacuum furnace is widely used in the fields of metal heat treatment, meticulous and ceramic sintering, different kinds of crystallization production, the optic fiber producing and sintering of the monocrystalline silicon of the semiconductor, usually it is high-vacuum or inert atmosphere furnace. Since these furnaces&＃039; working temperature is extremely high, the insulation material which can bear such temperature heat is necessary. Meanwhile, for economizing energy, the heat insulation material with good quality becomes the inevitable choice too. We export to many countries and enjoyed good reputation for the high quality, we sincerely wish to enter into business relationship with you. Best regards, Harry