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100% pencil is a pencil which perfectly makes the best use of a pencil. When a pencil is used for a period of time, it will be too short to use. With the tenons at both ends of 100% pencil,you can connect the short one with another longer one, so that you can continue to use it without waste. 100% pencil shows the 100% value of a pencil.
National Taiwan University of Science and Technology
Taipei City, Taiwan
Yung-Hsun, CHEN / Chih-Chiang, LIU / Yun-Ting, LIN