It is unclear that when the cement consumption has become popular in Iran. But what is certain is that the entry of cement in Iran was by foreigners which was used by them to build church, embassies and port installations. With the start of the fourteenth century under the Hijri calendar, the rate of expansion of infrastructure was so high that the quality and quantity of traditional products did not met the needs of the country. The needs became more apparent particularly by the construction of railway bridges, tunnels and multiple stations. Before 1314, Iran was the fourth importer of cement in the world. The everyday growth and development of civil works and infrastructure in this country demanded greater amount of cement entry into the country. Cement is a cheap, heavy and and vulnerable commodity that its transportation cost is very high compared to its price. Therefore, all countries started to build cement plant to meet their cement needs. Idea for a cement plant in Iran and studies on raw materials for cement production began in 1928. Then in 1931, the purchase agreement between Iran government and Sweden government was made to buy a cement manufactory built by FLSmidth Denmark with a capacity of 100 tons per day. The cost of the first factory of cement in Iran was obtained by the tax on sugar supply and its price was as nuts and other agricultural products to Denmark. The finished cost of plant was fifteen million dollars. The results of studies on mineral raw materials was selection of slide mountains near the city of Rey, seven kilometers from south of Tehran and across the " Bibi Shahrbanoo" mountains. After purchasing machinery, construction works of first cement production line in September of 1932 began by the company " Germany TENS Company "in this place. Substructures of the company were built " Ministry of Ways nd finally was built in the sunny winter day (29 december, 1933) and it was officially opened as first factory in Iran.