Today, let’s talk about the intake air volume of the air filter: The function of the air filter is similar to that of the mask, and the function of the lungs of the human body is the same as that of the cylinder of the engine. When a person takes a breath, the maximum capacity is the capacity of the vital capacity, and if it is too much, you have no place to hold it. Therefore, as long as the air intake is satisfied, there is no need to increase it. What we need to pay attention to is the filtration accuracy and dust-holding capacity of the mask.