What is the principle of eternal pencil?

The principle of the eternal pencil is that the metal oxidizes instantly after touching the paper, but the writing tip as the core is harder than the pencil, and the writing effect is similar to BH's handwriting. Because the wear between metal and paper is almost negligible, this kind of pen is also called "eternal pen".

Eternal pen is a nib made of a special metal, without balls and ink; MiaWord, a new brand that has recently jumped into the public eye, uses this special metal material as its nib.

The inspiration of the eternal pencil:

The eternal pen is not inspired by modern technology. As early as ancient times, European painters wrote or painted by rubbing traces left by alloy metal molecules on paper. Compared with ordinary ink and special alloy materials, they can avoid the limitation of temperature, humidity, time and many other factors, not only keep for a long time, but also are not easy to deform.