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The production process of rigid graphite felt adopts professional technology and integrates graphite paper, graphite felt, and carbon cloth through a unique method. It is then cured and formed, followed by secondary high-temperature purification. Graphite hard felt exhibits high purity and a rich carbon content, showcasing excellent ablative resistance and thermal shock resistance. Its air scouring, heat insulation, and heat preservation performance are also outstanding. It is primarily used in ultra-high temperature vacuum high-pressure sintering furnaces, as well as in the electronics, semiconductor industries, solar photovoltaic sector (including polycrystalline casting furnaces and single crystal furnaces), and other vacuum industrial furnace equipment within the graphite carbon industry.