Delvar Afzar Oxygen Industries Company was established with the aim of manufacturing the machinery for separating oxygen and nitrogen from the air using PSA method and it is known as the first manufacturer of oxygen producing machines adopting PSA method in Iran.

At present, Delvar Afzar Oxygen Industries Company is known as a strong company in construction of VPSA, Molsieve, and Dryer units and also PSA nitrogen producing units.

The oxygen producing machines in 26 different models with the capacities of 15 up to 3600 liters per minute and nitrogen producing machines in 13 different models with the capacities of 40 up to 6500 liters per minute are manufactured in this company.

The products of this company are used in different fields such as industry, hospital, fish farming, and food industries.

This factory is located in a land with an area of 18000 sq. m in Chaharbagh District, Karaj. A production hall with an area of 2400 sq. m, a technical site with an area of 450 sq. m and an administrative - labor building with an area of 5600 sq. m have been constructed in this factory.

This factory is known as the site for distribution of industrial gases in central areas of Iran and is used as a place for storing industrial gases and filling cylinders.

All steel structured related to ASU plants, reformers, etc are manufactured in this factory.