CHEMICALS USED IN INDUSTRY, NAMELY, CHEMICAL ADDITIVES FOR THE PRODUCTION OF CONSTRUCTION MATERIAL ON MINERAL-BOUND BASIS IN PULVERIZED, DRY, SOLUTED OR LIQUID FORM, IN PARTICULAR AIR PORING AGENTS, THICKENERS IN THE NATURE OF AGGLUTINANTS, LIQUEFIER, FLUXING AGENTS, STABILIZERS, ACCELERATORS, REDUCERS, DISPERSION POWDER, HYDROPHOBIC AGENTS, AS WELL AS MIXTURES OF THE AFORE-MENTIONED CHEMICAL PRODUCTS