Powell glass screen protector inspection specification
Contents 1. inspection standard 1.1 Definition of nouns 1.2 Tools, equipment, environmental requirements 1.3. inspection item 1.4. Tempered glass screen protector appearance inspection standard 2, inspection Specification 2.1, DROP BALL TEST 2.2, DROP TEST 2.3, Hardness of surface 2.4, Fingerprint proof effect 2.5, High/low temperature storage 3, Quality contrast images 3.1 Glass cracks contrast after [...]