Gorilla Glass is a brand of chemically strengthened glass developed and manufactured by Corning, now in its seventh generation, designed to be thin, light and damage-resistant. As a brand, Gorilla Glass is unique to Corning, but close equivalents exist, including AGC Inc.'s Dragontrail and Schott AG's Xensation. The alkali-aluminosilicate sheet glass is used primarily as cover glass for portable electronic devices, including mobile phones, portable media players, portable computer displays, and television screens. It is manufactured in Harrodsburg in Kentucky, Asan in Korea, and Taiwan.