A ballpoint pen is a common writing instrument, and its design features a small ball (usually made of metal or ceramic) on the tip of the pen that rolls over the paper and transmits ink. Ballpoint pens are popular because they are easy to use, write smoothly and do not leak ink.
Characteristics of ballpoint pen: Structure: A ballpoint pen is usually composed of a pen stem, a pen refill and a pen cap. The refill is filled with oily or water-based ink. Ink Type: 1. Oily ink: This ink dries faster and doesn't soak through the paper easily, but it may sometimes feel slightly thicker. 2. Water-based ink: This ink has good fluidity, bright color, and is smoother to write, but it may permeate the paper more easily than oil-based ink. 3. Neutral ink: between oily and water-based, combining the advantages of both, both a certain waterproof performance and maintain a good writing experience. Widely used: suitable for daily writing, drawing, signature and other occasions. Easy to carry: Many ballpoint pens are designed with retractable nibs that can be extended or retracted by pressing, making them easy to carry and not easily damaged.
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