The current postal currency cards are local, and the state has not approved them. Basically, all postal currency cards are speculative. In the market, they may only be worth 50 yuan on other trading desks until they are fired to 5000. It is often reported that postal currency card companies run away and run away. Besides, after you buy this zip code card, you can't get out at all Only the industrial and commercial bureau supervises such departments in China. It is legal not to run away, so it is not recommended to do this domestic trading mode at all. There is no real big banker to stabilize this situation.
The above is my personal opinion, and I hope to adopt it.