The diagram below shows the production of a lead pencil. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram below visualizes the production process of a lead pencil.

Overall

, the process starts

from

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with

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growing the pines as the main wood material and ends with the box of pencils which are painted, sharpened, and stamped. The first step was growing the pines coming from seedling which at 4 months was replanted at the bigger place. When the plants were at the age of 3 years, thinning was needed as one of the processes to make the pines have a larger space to grow. After 14 years, the plants can be harvested as the major material for pencils. The wood from the harvested plants

cut

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was cut

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into thin slats and treated for 60 days before

black

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the black

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lead was glued at the

slat

. A new

slat

is used to cover the

slat

on which side had the black leads. The next process was to press the sandwich

slat

with hard tension and heat followed by cutting the

slat

to

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into

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be uncoloured pencil.

Additionally

, it was painted, sharpened, and stamped to become a useful pencil with a good appearance.

Finally

, a box of black lead pencils was produced.