Hotel gold card

There are two different views on whether the hotel VIP gold card is pure gold.

One view is that the hotel VIP gold card, also called VIP card or VIP card, is yellow, while the Shanghai VIP gold card says that it contains 9999 gold, so it is 999.9 pure gold, that is, 10,000 pure gold, with a gold content of 999.9‰, which is very expensive and many people like it.

Another view is that although the Shanghai VIP gold card contains 99.99% pure gold, it does not mean that it is made of pure gold. In some cases, cards may be gold-plated instead of pure gold. It can be tested with nitric acid. If the cards are made of silver or other metals, they will react with nitric acid. If it is pure gold, there will be no reaction. If the card is gold plated, it may fall off if it is soaked in nitric acid for a long time.

You can ask the hotel staff for more accurate information.