| http://www.w3.org/ns/prov#value | - Nonpolymeric fillers can also be added to the polymer precursor fluid, including but not limited to carbonates, such as CaCO3 and MgCO3, clay, including attapulgite clay, borates, sulfates, phosphates, diatomaceous earth such as celite and silica flour, alumina, colloidal silica, and zeolite solids.
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