Sulfuric acid is used in the metallurgical industry and metal processing sector, especially in the production of non-ferrous metals; Production of petroleum products such as gasoline and lubricants in the petroleum industry; Coking chemical industry (using sulfuric acid to react with ammonia in coke oven gas to produce ammonium sulfate as a byproduct), electroplating industry, leather industry, pigment industry, rubber industry, paper industry, paint industry (preparation of organic solvents), industrial explosives and lead-acid battery manufacturing industry, etc; Used as a softener, ion exchange regenerant, pH regulator, oxidant, and detergent for hard water. It can also be used for the manufacture of fertilizers, pesticides, urea, dyes, pigments, plastics, synthetic fibers, explosives, textiles, integrated circuits, and various sulfates; Sulfuric acid is required for the sulfonation reaction in the preparation of sulfonamide drugs in the pharmaceutical industry, as well as for the nitration reaction in the preparation of the fungicide furacilin.