Numerous production processes, such as the production of drugs, implants or microchips, require a completely dust and germ-free environment to protect products, employees and ultimately the patients who receive the drugs or implants from contamination. Even in micro-technology the smallest dust particles on the boards can lead, e.g. to a smartphone not working properly during operation. Whether medical technology, pharmacy, optics and laser technology, microelectronics, biotechnology or automotive engineering - cleanrooms have become indispensable in many industries. The applications are as different as the various requirements.