Refractory metals usually refer to those metals having a melting point in excess of 2200K, such as Hf, Nb, Ta, Mo, W and Re, or include all the transition metals of group IV to group VI of the Periodic Table, i.e the metals Ti, Zr, V and Cr with melting points between 1941K and 2180K. These exhibits more distinguishing features in electrical, electronic, corrosion resistance applications at ambient temperature, mechanical properties, fabricability, economic factors, and special properties for chemical process applications compared to more traditional materials used in the process industry. Minor Metals are as diverse as tellurium, cadmium, bismuth, indium zirconium etc, which are essential for and contribute great to the industry activity.