Chemical additives for use in the manufacture of glass, fiberglass, ceramics, iron, concrete,mortar, clay, abrasives, composite materials, semi-conductors, refractory products, plastics and thermoplastics used in the science and photography, agriculture, horticulture and forestry industries, unprocessed artificial resins, fire extinguishing compositions, tempering and soldering chemical preparations; tanning agents for use in the manufacture of leather; waterproofing chemical substances for p...