Qaem Sazan Afra Construction and Service Company with registration number 10048, with more than 25 years of experience in the field of building construction and construction projects, has expanded its activities in the field of filtration systems (aerobic and anaerobic) since 2005.

This company is the first manufacturer of concrete septic tank without straps in the country and the creator of new methods of industrial and sanitary wastewater treatment and sends its products to different parts of the country.