Why is there a scratch on the electronic shelf label samples I received?

Why is there a scratch on the electronic shelf label samples I received?

Why is there a scratch on the electronic shelf label samples I received?
When you  get the Sertag electronic shelf labels , we'll see some of them have scratches on the surface. Please don't worry. All Sertag electronic shelf labels  products have protective film.
Here is the link for  how  to  peel elec tronic shelf labels  protective film off ?