By participating in the first exhibition of domestic manufacturing opportunities and the second exhibition of mining and related industries from February 5, 2020 to February 7, 2020, CAC showed its strong presence in the field of national production. The domestic manufacturing opportunities exhibition was opened with the presence of the governor of Qom and the head of the industry and mining organization and high-ranking officials of the province and started its work at 16:00 on Wednesday, February 5, 2020, and after three days, on Thursday, February 6, 2020, at the end of the day. 21:00 officially ended its work. In this exhibition, the necessity of using a catalyst in the car to reduce the pollutants caused by the smoke of gasoline engines was explained to the public, so that by clarifying the benefits of using this essential part, it is a step in creating a culture of using quality catalysts, in order to preserve remove the environment.