To hook: the film has a strong smell in the beginning for plasticizers. The film is wirklch very smooth.
But from experience I know that the smell will disappear after some time.
Tip: In the video tutorial you can see how the white protective foil from the actual protective sheet is lifted with a needle. One should watch out there exactly, that you not the real protector is withdrawn together with the white protective foil from the carrier film. You have to pay close attention so that you can really stand out only the white protective film from the protective film with the needle.