Tetrafluoroboric acid is widely used in electroplating processes, particularly for depositing metals like copper, nickel, and silver onto various surfaces. It serves as a key component in electrolytes due to its stability and ability to produce high-quality metal coatings. In organic synthesis, it acts as a catalyst or reagent in reactions such as polymerization, alkylation, and esterification, enabling efficient chemical transformations. Additionally, it is utilized in the production of specialty chemicals and as an etching agent in the semiconductor industry for precise material removal. Its strong acidic nature also makes it suitable for applications in analytical chemistry, where it aids in sample preparation and ion exchange processes.