The secondary activated carbon adsorption box is a common air purification equipment, which is mainly used to treat odors, harmful gases and volatile organic compounds (VOCs) in indoor air. It uses activated carbon as the main adsorption material to remove pollutants from the air through the principle of physical adsorption. 
The secondary activated carbon adsorption box usually consists of two adsorbers, each of which is filled with activated carbon particles. As the air passes through the adsorber, the activated carbon particles adsorb airborne contaminants, including odors, harmful gases, and VOCs. The advantage of this kind of equipment is that it can effectively remove pollutants in the air, and at the same time has the advantages of high efficiency, safety and environmental protection. 
Compared with the primary activated carbon adsorption box, the secondary activated carbon adsorption box has higher adsorption efficiency and longer service life. It is usually used in various places such as homes, offices, factories, etc., which can effectively improve indoor air quality and improve people's quality of life and work efficiency. In addition to the activated carbon adsorption box, there are other air purification equipment, such as high-efficiency filters, photocatalysts, ultraviolet lamps, etc. These devices work differently than activated carbon adsorption boxes, but they are both effective in removing pollutants from the air and improving indoor air quality. 
In a word, the secondary activated carbon adsorption box is an efficient, safe and environmentally friendly air purification equipment, which can effectively improve indoor air quality and improve people's quality of life and work efficiency. When selecting and using air purification equipment, it is necessary to choose the appropriate equipment according to the actual situation to achieve the best purification effect.