... felt, rigid graphite board, vacuum thermal chamber, Hot Zone and CFC for Vacuum Furnace, High Temperature Sintering Furnace ... Sintering, Non Oxide Ceramics, Tungsten Carbide manufacturingVacuum Treatment Industry:Heat Insulation for Commercial Heat Treat Furnaces, Hardening, ... .minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); hot zone-Heating chamber of vacuum furnace