The website is about DTEI Dienstleistungen Eventverleih, a rental service center that offers various equipment and services for events. They specialize in providing catering equipment such as dishwashing machines, cutlery, glassware, and porcelain. In addition to event rentals, they also offer cleaning services and environmental protection solutions such as water treatment and purification. The website emphasizes their wide range of available items and promotes their efficient delivery service.