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Correction pen harmful to the environment, but will not disappear in a short time Li can be white, the use of combined design and correction tape correction pen, you can reduce the amount of correction pen, a correction pen may additionally reduce plastic packaging, will help the environment.
This is designed to correction tape after use, you can buy additional correction with re-installation, since the correction pen output quantity is small, can extend usage.
National Taichung University of Science and Technology