Population growth, especially in the years after the victory of the Islamic Revolution in Iran, has led to an increase in the consumption of agricultural products. This subject has increased the need for chemical fertilizers. In recent years, the petrochemical industries have grown significantly due to the presence of rich gas sources and experienced and specialized workforces. Therefore, the National Petrochemical Company has decided to expand further the petrochemical industry in Iran. Kermanshah Ammonia and Urea Production Complex has been established to supply a part of the chemical fertilizers required by Kermanshah province and neighboring provinces in the west of Iran. The establishment of this project has a significant role in job creation in the region, expanding the technical ability of the territory, and improving the knowledge of regional experts, besides supplying the required fertilizers. Kermanshah Petrochemical Company has been established on a 295-hectare land in Kermanshah province in the west of Iran. The industrial sector of the complex has dedicated itself 62 hectares, and more than 116 hectares have been considered for the construction of the green area. The company’s ammonia unit, with a capacity of 1200 tons per day, has been constructed based on the technical knowledge and technology of M.W. Kellogg, England. Urea and granulation units, with a production capacity of 2000 tons per day, have been built using the technical information and technology of STAMICARBON, Netherlands.