Material: 0.4mm CSG high alumina glass + 270AB glue. Process: 120CC large arc chamfering, 48 degree super wide arc surface. Fingerprint oil: Electroplated super smooth fingerprint oil, anti-fingerprint screen, refreshing and not greasy. The design full screen of the dust-proof net, the full screen covers the earphone hole and protects the earphone well. Easy to install, with excellent adhesion.