I, Gholamreza Satri, have been working in the field of industry and manufacturing parts and industrial equipment for cement factories and mines for 20 years, and in this regard, I have been working for the factories and tried to improve the functionality and working time of parts in the cement industry. By changing at some points in terms of the material and the type of construction, the changes have been made, so I have been working with economy in making strong parts with lower cost and more performance.