... to install 4.It has clear image 5.firm and anti-impact Firm and anti- impaction PC or Acrylic material convex convex mirror I ... application requirement5,The outdoor traffic mirror is UV-cut, firm and anti-impaction.6,It has clear image,7,It is easy ... for installation and clean with mull or wet sponge Firm and anti- impaction PC or Acrylic material convex ...