Clean Room, also known as clean workshop, clean room or clean room. It is the foundation of pollution control. Without clean room, pollution sensitive parts can not be mass-produced. In FED-STD-2, a clean room is defined as a room equipped with air filtration, distribution, optimization, construction materials and devices in which specific, regulated operating procedures are used to control the concentration of airborne particulates in order to achieve an appropriate particulate cleanliness level. Clean room refers to a room specially designed to remove particles, harmful air, bacteria and other pollutants from the air within a certain space, and to control indoor temperature, cleanliness, indoor pressure, air velocity and air distribution, noise and vibration, lighting and static electricity within a certain range of requirements.

The differences between industrial and biological clean rooms are shown in the table below