Ethylene glycol is widely used as an antifreeze in automotive cooling systems to prevent engine components from freezing in cold temperatures and overheating in hot conditions. It is also employed in the manufacturing of polyester fibers and resins, which are essential in producing textiles, packaging materials, and plastic bottles. In the aviation industry, it serves as a de-icing fluid for aircraft to ensure safe operation during winter. Additionally, ethylene glycol is utilized in the production of heat transfer fluids for industrial processes, helping to regulate temperatures in machinery and equipment. Its hygroscopic properties make it a valuable component in hydraulic brake fluids and as a solvent in the paint and ink industries.