The main maintenance methods for crystal medals include the following:
Cleaning with diluted ordinary cleaning solution: Prepare a general cleaning solution and dilute it according to the appropriate water ratio. Then gently immerse the medal in the diluted solution and use a soft-bristled brush or your hands for thorough cleaning.
Thorough rinsing and wiping while semi-dry: After cleaning, thoroughly rinse the medal with clean water to ensure no cleaning solution residue remains. While the medal surface is semi-dry, gently wipe it with a soft towel to avoid leaving watermarks or fingerprints.
Avoid using corrosive cleaning agents: Avoid using alkaline, acidic, or alcohol-based cleaning agents, as these may corrode the medal material.
Preventing oxidation and yellowing: For crystal medals and similar items, minimize heat exposure to prevent yellowing due to oxidation.
Prompt wiping to avoid water stains: Do not wait until the water is completely dry before wiping, as this may leave noticeable water stains. Therefore, wipe the medal while the surface is semi-dry to maintain its shine and appearance.
