ASML Holding N.V. is a holding company based in the Netherlands. The Company operates through its subsidiaries in the Netherlands, the United States, Italy, France, Germany, the United Kingdom, Ireland, Belgium, South Korea, Taiwan, Singapore, China, Hong Kong, Japan, Malaysia and Israel. The Company operates through one business segment which is engage in development, production, marketing, sales, upgrading and servicing of advanced semiconductor equipment systems, consisting of lithography, metrology and inspection systems. The Company offers TWINSCAN systems, equipped with lithography system with a mercury lamp as light source (i-line), Krypton Fluoride (KrF) and Argon Fluoride (ArF) light sources for processing wafers for manufacturing environments for which imaging at a small resolution is required. TWINSCAN systems also include immersion lithography systems (TWINSCAN immersion systems).