... felt, rigid graphite board, vacuum thermal chamber, Hot Zone and CFC for Vacuum Furnace, High Temperature Sintering Furnace, ... production, sintering monocrystalline silicon for semiconductors.Since these furnaces work at extremely high temperatures, it is necessary to ... run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); hot zone-Heating chamber of vacuum furnace