How about charcoal pencils, charcoal strips and pencils?

Charcoal pencils and charcoal strips have different hardnesses.

Charcoal pencils are generally softer and the colors drawn are darker.

Charcoal strips are generally harder. The color drawn is not that deep.

The above two methods are not easy to erase after writing. They are mostly used by people who are relatively skilled in art. They are mostly used for sketching and simply expressing the block structure of sketches.

It is more suitable for beginners to use pencils, which are convenient for erasing and modification.

Their main components are carbon, but the proportion of "impurities" added is different, so the characteristics will be different.< /p>