It is protected by spraying tin tetrachloride and metal compounds that can improve electrical conductivity on the surface of the lens, forming a multilayer conductive film on the surface of the lens, which plays a role in shielding microwave.
It is protected by spraying tin tetrachloride and metal compounds that can improve electrical conductivity on the surface of the lens, forming a multilayer conductive film on the surface of the lens, which plays a role in shielding microwave.