The factors that determine the price of filter bags are analyzed as follows:

I. The filtering wind speed in the equipment is the primary reason that affects filter bags' price. Some manufacturers blindly pursue profits, cut equipment costs, and adopt too fast filtering wind speed, that is, beyond the range they can bear, thus reducing the price of PPS dust collector filter bags but shortening their service life.

II. The main factor affecting the price of a glass fiber filter bag is the nature of dust. Because dust contains acid, alkali, and other substances, we must choose the appropriate filter fabric, and only by choosing the appropriate fabric can we achieve the purpose of dust adsorption.

III. Temperature is also the key to affect the price of polyester filter bags. If the purified smoke gas temperature is too high, it will cause the dust collector bag's operating temperature to exceed the expected value, shorten the service life in light cases, and cause the filter bag to burn down in grave cases. The PPS dust collector filter bag's price will be affected by temperature. Therefore, we need to select the appropriate filter material that can withstand this temperature according to the filter bag's working temperature.

IV. Product quality is also closely related to the price of glass fiber filter bags. Some small sewing machines use an inferior thread and low processing level when processing filter bags so that the products produced will have open threads and cracks, which leads to a decrease in the price of polyester filter bags. Meanwhile, after dust adsorption for a long time, it will also cause bag dropping.