Is the Hangzhou subway card collectible? Now

I would like to ask whether the Hangzhou subway travel card is collectible now. Hangzhou subway travel card has collection value. Hangzhou subway travel card has certain creativity and characteristics in the combination of tourism and transportation, and has certain design and cultural connotation. Cards are also issued in limited quantities, so for collectors or people who love to collect subway cards, Hangzhou subway travel cards have collection value from now on to the future.