... surface treatment scratch, scratch index of 3.3H. 4.The anti-ultraviolet ray protective film treatment to prevent ultraviolet damage ... protctor has labe 1 and labe 2 label, used to separate the three layers of screen protector12.Using of clean cloth to ... the screen of the phone13Remove the printing of labels 1, align the edge of the phone, start pasting from the side of the phone, then tear off the ...