Hot dip galvanizing auxiliary additives are the core functional substances that guarantee the efficiency of the hot dip galvanizing process and the superior performance of the zinc coating. They mainly cover four key categories: galvanizing explosion-proof agents, fluxing agents, pickling fog suppressants, and passivation solutions (chromate and non-chromate types), which need to be used in conjunction with core galvanizing raw materials (zinc ingots, auxiliary alloys, etc.) to jointly achieve the high-quality anti-corrosion treatment of metal workpieces.