The Class A clean bench is a device that provides a local high-cleanliness working environment. It is usually used in fields such as laboratories, pharmaceuticals, and electronics that have high requirements for environmental cleanliness. It filters the air through a high-efficiency filter to form a vertical or horizontal unidirectional air flow, which can effectively remove pollutants such as dust and bacteria in the air and provide a clean and safe space for operations. It is easy to operate and has strong applicability.