Residential property will set most of the owners' electric cards as invalid cards, and then reissue new cards at the price of 50 yuan per card!

We should be able to find out. Every card will have a card number. Maybe your card number was dropped in the electricity purchase system, and your card is useless. This is because the old and new properties have not been handed over clearly. It should be that the charging system is not clear, and the property management company has certain responsibilities. It's not enough to hire a service person from an old property, but it's not 50 yuan. If necessary,