As we know, OPGW currently include the function of ground wire/ earthwire, which means meeting very high standards of mechanical properties, conductivity besides its optical characteristics. Therefore, selecting appropriate design for OPGW for each project is extremely important to meet the mechanical, electrical and optical parameters. Our company is cooperating with the most prestigious manufacturers of OPGW and Accessories in the world; with the desire to bring stability to the National information system for the Smart Grid system in the future as well as telecommunication systems. This is a very important requirement and having a great impact on the long-term development of country in the future. Therefore, we are always aware of its importance in every single project we carry out.