Complex sentence: In early 2013 Corning announced Gorilla Glass 3 which the company says is stronger as well as three times more scratch-resistant than Gorilla Glass 2--and that 40% fewer of the scratches that do occur will be visible to the naked eye.
Split into simpler sentences: In early 2013 Corning announced Gorilla Glass 3 which the company says is stronger and three times more scratch-resistant than Gorilla Glass 2. Corning also claims that 40% fewer of the scratches that do occur will be visible to the naked eye.