At present, there's no such internatinal standards. Each company has its own standards. It's for reference that the adhesion of protective film is usually classified into four degrees which are slight, low, meidium, and high. Generally, 0.02-0.1N refers to slight degree; 0.1-1N,low degree; 1-2N, medium and 2-6N, high. But this is not always the same. It depends on the requirements of themanufacturers.
