Tehran Interchange Company started its activities in consulting, designing, producing and installing refrigeration systems since 1374. In addition to the design in accordance with the latest industry standards, the company produces and supplies various equipment including evaporator types, condenser types, pressure vessels, heat exchangers and other refrigerating equipment. The increasing and increasing use of refrigeration systems, especially industrial refrigeration, in various industries such as food industry, agricultural production, semi-finished food, production lines for slaughterhouses, dairy industry, beverage industry, fisheries and aquaculture, medical sciences, construction industry, industries The huge oil, gas and petrochemicals and many other fields all illustrate the importance of this industry in today's world. In this regard, Tehran Transformers Company has been working continuously in this industry for many years and has tried to take an effective and forward step by utilizing the technical knowledge of the day of the world and its application in researches and calculations, as well as the production and installation of the necessary equipment. In realizing the goals and ideals of this industry in the country. The result of this policy is the implementation of numerous national and international projects in the field of consulting, preliminary studies, equipment production and installation, various industrial refrigeration systems, such as undercover and above-zero refrigerated slaughterhouses, ice cream factories, oil and gas industries Petrochemical, AIS Bank, dairy industry, food industry, etc., with more than 600 internal projects and 60 international projects and having an index of 3.09 projects a month, are among the top companies in this industry in Iran. Is.