1, the heat can be recovered when it is cold, and it will disappear when it is hot. You don't need an eraser, the ink doesn't smell, the correction fluid is toxic, and hot rubbing will replace the correction fluid.

2. Erasable pens are made of special ink and refined by special technology. They are divided into erasable ballpoint pens and erasable gel pens. Its handwriting can be erased with an ordinary eraser or a special pen in a certain period of time and can be revised repeatedly, but some pens can't write, which has the dual advantages of ballpoint pen and pencil.