Building product suppliers are increasingly required to disclose the content of their products to provide health and wellness transparency. The ceramic tile industry’s newly-released Material Ingredient Guide provides strategic instructions for manufacturers to follow when providing the content and chemical makeup of their products using various material ingredient reporting formats that qualify for
contribution to green and healthy building “optimization” credits.  https://whytile.com/wp-content/uploads/2021/07/TCNA-Material-Ingredient-Guide.pdf