ASML is a Dutch high-tech company, and a primary supplier of machines for the semiconductor industry. The steppers and scanners they produce are used for making semiconductor chips, and R&D as well as assembly take place at ASML’s headquarters, located in Veldhoven, Netherlands.

Assembly of their products takes place in a cleanroom. The cleanroom for ASML is made with the Maars String2 family, comprised of String2 solid, cross and fire resistant walls in the space. In addition, they are using both manually operated String 2 doors and double sliding doors, as well as an automatic double sliding door. Doors with extensive acces control that have been classified with resistance class 2 have also been selected for the project.