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 Viscosity of the ink is the key issues affecting the quality of the ink. The viscosity of the ink is not neutral with our simple concept daily thickened gel ink has some consistency and viscosity of the gel pen processing. And the time of writing, the use of its stamp denatured and reduced false makes the tip of the ball has a lower viscosity rotated to cut with ink pen to write with fluency requirements without delay. Another general ink has a strong jab degeneration and shrinkage of false. To avoid viscous gel ink pen ink to clog his factory, he proposed that the tube is equipped with quick-drying ink can be rotated to the top Install small metal balls. The metal ball would have two functions: as a cap to prevent the ink from drying out. The ink at a controlled rate of flow from the pen. In June 1943, Biro and his brother Georg (a chemist) to the European Patent Office applied for a new patent, and produced the first commercially available --Biro ballpoint pen. Gel pen wholesale | Gel Ink | Ming-kai stationery provided by Yiwu Ming-kai stationery firm. Yiwu Ming-kai stationery firm (mingjia21361.1688.com) strong, credible, Jinhua in Zhejiang gel pen industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Ming-kai stationery into the brilliant and you work for a better future!