prefix----English alphabet , represents product special purposes. Common products don't add prefix.
F---For glass etching protective film
J---For glass mirror bottom safety film
A---For aluminum profile protective film
Part A----The two number represents product type
50---White PVC protective film with single layer
60---Yellow PVC protective film with single layer
80---White PVC protective film with release paper
81--- Transparent PVC protective film with release paper
90---Yellow PVC protective film with release paper
11--- Transparent PE protective film
12---White PE protective film
13--- Printing PE protective film
14---Black PE protective film
15---Black/White PE protective film
16---Green PE protective film
17---Blue PE protective film
18--- Printing (transparent) PE protective film
19---PE protective film with cross lines
Part B----the two number express product thicknesses, PVC thickness unit is C; PE unit is μ. suffix---- one letter and one number, represents that:
For PVC Protective film，letter is release paper type , number is product width
D---thin release paper
E---thick release paper
T---牛皮纸or Special tape
0---Special width: 1---45cm； 2---60cm； 3---90cm； 5---105cm； 6---120cm
PE protective film，suffix represents scale of product adhesion
L1---light adhesion； L2---low adhesion； L3---low- middle adhesion；
M1---middle-low adhesion； M2---middle adhesion； M3---middle-high adhesion；
H1---high adhesion； H2---heavy adhesion； H3---ultra heavy adhesion
Example 1：F9012E5
For ：Glass etching and deep carving protective film，yellow PVC, film thickness 12c，thick release paper, width 105cm。 Example 2：1390M3
For ：Printing PE protective film，film thickness 90μ，middle- high adhesion.（1.5N~2N）。Length and Width dependent on orders。This protective film is a common type using at AluminumProfile Ltd.