A clean booth is a simplified cleanroom, an air purification device used to provide a localized high-cleanliness environment. It offers various cleanliness levels and spatial configurations, and can be designed and manufactured to meet specific needs. Its main features include high flexibility, easy installation, short construction period, and strong mobility. It uses fan-filter units (FFUs) for air supply, with a frame and ceiling made of painted square tubing (or stainless steel square tubing, industrial aluminum), and is surrounded by anti-static curtains. The internal cleanliness level can reach 10-100K class, and it is widely used in optoelectronic and electronic production lines, laboratories, assembly areas, and other localized high-cleanliness environments.