FINELY DIVIDED SILICA FOR INDUSTRIAL USE, NAMELY, AS A FILLER FOR NATURAL AND SYNTHETIC RUBBERS FOR USE IN THE MANUFACTURE OF PLASTICS, ELASTOMERS AND RUBBER PRODUCTS; AS A THICKENING AGENT FOR LIQUID SYSTEMS FOR USE IN ORGANIC RESINS AND DEFOAMER FORMULATIONS; AS AN ADDITIVE TO IMPART FREE-FLOWING PROPERTIES TO POWDERS FOR USE IN THE CHEMICAL INDUSTRY AND IN MANUFACTURE OF ANIMAL FEED; AS A CARRIER AND ADSORBER FOR CATALYSTS FOR USE IN THE REFINING AND POLYMER INDUSTRY; AS AN ADDITIVE FOR US...