Greenway has a long history in developing, designing and manufacturing clean bench, which has won the honor of National Silver Medal Prize. Our clean bench is local air clean equipment that can provide the working environment with cleanliness under ISO5 (Class 100). It can be classified as 2 types of airflow, horizontal flow and vertical flow; 9 types and 44 sizes. On the basis of different feature and function, the product will be applied in various fields such as electronics, medicine, precision instrument, pharmacy, cell cultivation, stock raising and curing, biological engineering and labs.