In our company, there is stock of these metals long-term as follows, (1) such rare metals as nickel, cobalt, manganese, aluminium, titanium, zirconium, tungsten, molybdenum, tantalum, niobium, vanadium, hafnium, gallium, indium, thallium, selenium, Tellurium and rhenium; (2) such noble metals as gold, silver, plat...