What they said is correct.We confirm that we made certain changes/modifications.Sorry that we didn't report to you in time.
As M's feedback that the color fixing of this type of adhesive sticker is not good enough and easy to be scratched,so in order to protect it and to avoid losing color,we put an oil coating on the surface.In this way,the color is we protected.And this doesn't affect the appearance/visual effect of the adhesive sticker.We will continue with this method in the future production.