|     ADA RAISED LETTER GRAPHIC PROCESSES Desk & Door Nameplate Co. manufactures ADA compliant signs in five unique graphic processes designed for each specific need. TE (Tactile Etch) Click here for more information on this product. One-Piece Construction Recommended for Interior Use ME (Metal Etch) Click here for more information on this product. Zinc Etched or Magnesium Etched For Fine Detailed Graphics Metal Finish Appearance Recommended for Interior & Exterior Use | |