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Pencil (qi) ā N b ǐ， Pencil is a type of pen used specifically for writing and sketching, with a history of over 400 years. Among them, pencils for sketching can be divided into many types, which can be divided into three stages of development: graphite, wooden pen holders, and capped pencils; In addition, its colors have stripes such as red and white, black and white, yellow and black.
Classification by morphology
Pencil types include: "wooden pen holder", "sharpened pen holder", and "capped pencil".
"Ordinary pencil holder" refers to the pencil manufacturer pressing the pencil lead with a wooden rod, which requires consumers to sharpen the pen tip before use; In addition, there is a small eraser at the end of a regular pencil rod, which can be reversed to erase errors when writing, making it more convenient. It was invented by the American painter Oman.
"Sharpening pen holder" is a pencil semi-finished product that processes a pencil holder into a certain length of pen tip for sale.
A capped pencil is a combination of a pencil rod and a pencil cap.
Classified by process
It can be divided into traditional pencils and automatic pencils.

• Origin:China