Atlas Copco companies develop, manufacture, service, and rent industrial tools, air compressors (of which it is the world's leading producer),construction and assembly systems. The Group operates in four areas: Compressor Technique, Vacuum Technique, Construction Technique and Industrial Technique. The Atlas Copco Group is a global industrial group of companies headquartered in Nacka, Sweden. In 2017, global revenues totaled SEK 86 billion, and by the end of that year the company employed about 34,012 people. The company manufactures products at about 100 production sites in more than 20 countries. As of 2016, the United States is the company's largest single market, followed by China. "Great ideas accelerate innovation, By listening to our customers and knowing their needs, we deliver value and innovate with the future in mind"