Unfortunately, the films were very inferior, peel off the backing sheet form over the whole foil adhesive residues and also after being stuck on the screen of the camera can be the bubbles not removed by pressing, unlike another brand that I use now.
After the third film that everyone had the same mistake I did then given away and films the left were discarded. real shame :(
Good films hold on the screen by static electricity here unfortunately inferior adhesive is used.