After the purification project is constructed, the purification level is different according to the decoration quality of the purification equipment project; it can eliminate fine dust particles and microorganisms such as particles, harmful air, bacteria and other pollutants in the air in the fixed space, and adjust the indoor temperature, humidity, cleanliness, Indoor pressure, air velocity and air distribution, noise and vibration, lighting and static electricity are controlled within the required range.

At present, it is used in electronic information purification, semiconductor purification engineering, medical and health purification workshops, biological cleaning engineering, Xiamen food purification and so on. According to the industry's precision and dust-free requirements, the grades also vary greatly.