The diagram illustrates the process of pencil production. Overall, there are several steps involved, beginning with seedling baby trees, followed by a number of stages where the wood is processed, and culminating in the creation of a box of pencils.
Looking at the initial stages, many saplings have been raised for four months and replanted for three years. After that, the forest is thinned to allow trees to grow better and reduce the risk of wildfires. After that 14-year period, trees are cut down from forest before being cut into thin slats using a circular saw. Finally, the slats undergo a 60-day period to become dry.
The subsequent stages focus on transforming prepared slats into pencils and then packing them in boxes. First, grooves are placed on the slats to glue black leads into each groove. Then, another new slat is put on top to make a sandwich with black leads inside. Following this, the sandwich is then heated and hard-pressed simultaneously so as to bond the layers together before cutting it into individual pencils. In the final stage, the pencils are painted, sharpened, and stamped before being packaged into boxes of pencils.