bleaching earths, also known as clay mineral substances in the nature of filtering materials that are used to absorb impurities from oils, fats, and waxes for use in refining of vegetable oils and animal fats for human consumption; bleaching earths, also known as clay mineral substances in the nature of filtering materials that are used to absorb impurities from oils, fats, and waxes for use in the refining of biofuels and mineral oils

bleaching earths for use in refining of vegetable oils and animal fats for human consumption; bleaching earths for use in refining of biofuels and mineral oils