Phase platforms SPD14A & B, SPD17B and SPD18B of South Pars for construction were located in Mobin Sazeh Gostar Persian Gulf Company located in Hormozgan province. Lian Offshore Innovators Company was responsible for completing many parts of the structure and architecture of these platforms, installing and commissioning the mechanical equipment of these platforms. More than 70 mechanical equipments have been installed and commissioned in these platforms, and after completing the remaining works of the structure and architecture sector, the platform was delivered to the employer and successfully installed in the sea in the position of South Pars. The management and engineering of this project has been done with trust and reliance on the Iranian youth, and the result of this trust is the completion of this project in the shortest time with the best quality. All these operations have been completed without any incident.