1, advantages: the bottom of the candle tray is heated, and the heat preservation effect is really good. When serving in the hotel, the waiter will light candles under the plate for some fish soup that needs to be eaten hot. Even if the fish soup is still hot at the end of winter, it means that the bottom of the candle tray is heated, and the heat preservation effect is really good.

2. Disadvantages: The main component of candles contains carbon. When it is not completely burned, there will be carbon adhesion on the glass and iron fist you mentioned, and what you see is the black charred appearance.