establishment of a limited company by the name of Darmangaz, with the scope of production and distribution of medical gases and chemical materials, was registered in Tehran. Then the factory was constructed in a land about two hectares in Isfahan. Its construction was started in 1983 (1362 A.H). During the construction, in order to research and purchasing, company managers traveled to Switzerland and visited Socsil Company (the sole manufacturer of anesthesia gas production machinery). They contacted with the mentioned company to buy machinery and its technical knowledge with the specifications of having most advanced world technology and production capacity of 600 tons per year of anesthesia gas.

In year 1984 (1363 A.H), simultaneously with the completion of production and administrative buildings, the importation and installation of machinery was completed. In the early 1985 (1364 A.H) prelaunch production was started. At first stage a sample of the product was sent to Switzerland for test that its purity and quality was favored so much and approved by Socsil Company.