Hydrotreating catalyst containing one or more metal oxides andor sulphides selected from Group VI-B and Group VIII of the Periodic Table supported on a porous refractory carrier, wherein the catalyst being in form of an angular extrudate with rounded edges. Also described is a bale having substantially flat upper and lower surfaces, which can be safely stacked vertically for transportation and storage purposes. Other multiple mobile devices may be represented in the display as images. This assures that only nodes on-the particular path will receive the special key or possibly some other information related thereto.