... felt, graphite felt, rigid graphite board, vacuum thermal chamber, Hot Zone and CFC for Vacuum Furnace, High Temperature ... heat treatment, meticulous and ceramic sintering, different kinds of crystallization production, sintering monocrystalline silicon for semiconductors.Since these ... productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); hot zone-Heating chamber of vacuum furnace