Barsava Sepehr Part Chemical Company, with the commercial brand name BARNO, is the largest producer of Ammonium Sulfate in Iran and the Producer of Crystalline Ammonium Sulfate in Iran using the state-of-the-art knowledge of Europe. This company is one of the subsidiaries of Sepehr Holding Company and was established in 2020 and began its work with an annual capacity of 90,000 tons in 2022. Sepehr Holding Company was established in 1999, and its main activities include design, manufacturing, installation, and launching petrochemical facilities and producing various chemicals. Considering the amount of its import to the country in recent years, one of the main objectives for establishing Barsava Sepehr Part Chemical Company is to resolve Iran's need for Crystalline Ammonium Sulfate.