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舒适,不易产生疲劳的笔 / not easy produce fatigue pen

舒适,不易产生疲劳的笔
舒适,不易产生疲劳的笔

See Pens did not consider the hand jaws of death by the force relations, and a pen to write for a long time painting the tiger's mouth position of the hand are easily fatigued.Taking into account this shortcoming, pen loops using softer rubber material for production to prevent sliding of the pen, pen loops itself has a certain degree of flexibility, different size according to the size of each hand and hold a pen efforts, pen loops leave some space inside, suitable for differentage groups use pen loops at both ends outward tilt for easy installation and removal, pen loops the internal can increase the capacity of the internal refill can be e

University

山东大学

山东大学
Jinan City Shandong Province, China

University

山东大学

山东大学
济南, China

Design

山东大学

山东大学
Jinan City Shandong Province, China