1. Prevent strong static interference
2. Prevent strong electromagnetic field damage
3. Prevent others from maliciously stealing your personal information
4. Extend the effective life of smart cards
5. Various of bank card shopping card bus card etc.
2. Prevent strong electromagnetic field damage
3. Prevent others from maliciously stealing your personal information
4. Extend the effective life of smart cards
5. Various of bank card shopping card bus card etc.
