- material: asahi glass and nippa ab glue. - technology: 2.5d acre edge, a.F coating. - function: shatter / water / oil /dirt proof, scratch-resistant. - transparency:high transparency, light transmission rate up to 99% - sensitivity: sensitive operation, delicate touch. - adhesion: silicon perfect adhesion. - hardness: 8-9h - life circle: lifelong under normal using conditions - condition: 100% brand new 200pcs/ctn