ESI - Hanover, MA (Hanover, Massachusetts) - ESI (E.S.I.) is an acronym for Eyesaver International. ESI manufactures high-quality optical display filters for LCD's, computers, mobile devices, digital signage, instrument panels, and many other industrial, military, and medical applications. ESI sells to other businesses, not to individuals. If you are an individual looking for a display filter, please visit your local office supply retailer.
ESI has its world headquarters in Hanover, Massachusetts. ESI has been in business for over two decades, and has become a world leader in custom display films and filters.