In humid environments, moisture and sulfides in computer room settings can easily penetrate the interior of optical modules, causing the failure of corrosion-prone components (such as resistors, ferrite beads, and PCBA). For some types of optical modules, the golden fingers must remain exposed during operation. Under environmental conditions such as salt spray, nitric acid vapor, sulfur dioxide (SO₂) gas, and dilute acids, these gases can seep through the micropores in the plating layer on the surface of the golden fingers, leading to corrosion.

Nano-coatings, leveraging the properties of high light transmittance, weather resistance, and multifunctional modification, are widely applied in fields such as optical components, display devices, and photovoltaic products in the optoelectronics industry. They not only improve optical transmittance, photoelectric conversion efficiency, and display performance but also enhance the wear resistance and corrosion resistance of devices, extending their service life.