In 1990 Anritsu acquired Wiltron Company in the United States. Anritsu’s business expansion has occurred chiefly in the information and communication field. The company's flagship measuring instrument business provides products and services indispensable to the development, manufacture and maintenance of a range of communication systems as typified in mobile phones and the Internet on a global scale. In addition, Anritsu technologies have incorporated into a range of products in other fields, such as IP network equipment, inspection equipment for food and pharmaceutical products, and precision measuring instruments for electronic component.