Store it under normal room temperature and in a clean environment.
Use a card holder to protect your card against bending or scratching.
Do not flip, flap or fold the card
Avoid scratching the surface of the card, especially the surface of the chip.
Do not try to apply electricity to the chip
Do not put stickers (e.g. photos) on the card surface, the increase in card thickness, and the dust and residuals left on the chip surface may cause rejection of your card.
Do not hold your CU Link and another smart card (e.g. Octopus Card) together over the smart card reader at the same time
DOs
DON’Ts