There are four kinds of pens in the world. Do you know what they are?

There are four kinds of pens in the world: ballpoint pen, pen, brush and pencil.

1, ballpoint pen, the ball of the ballpoint pen used is made of cemented carbide, the ink of the ballpoint pen is made of pigment, solvent and viscosity regulator, and the color of the ballpoint pen refill is mainly black, blue and red.

2. Pen is a writing tool. Water-based ink is hidden in the pen holder, and ink is continuously supplied to the pen tip through gravity and capillary action.

3. Brush is a traditional writing tool originated in China, which is called Jade Tube and Jade Tube, and is listed as one of Four Treasures of the Study in China. The writing brush was invented by the Han nationality in production practice.

4. Pencil is a hand-held pen, which is a tool for writing and drawing on paper.

The traditional writing tool, the brush, which originated in China, has gradually become a traditional painting tool. The writing brush was invented by the ancient people in China in their production practice. With the continuous development of human society, the industrious and intelligent Chinese nation constantly sums up experience, preserves the essence, abandons the dross and dares to explore and innovate. For thousands of years, it has made outstanding contributions to the creation of the splendid culture of the Chinese nation and the promotion of cultural exchanges between the Chinese nation and all ethnic groups in the world. Brush is a treasure that the Chinese nation has contributed to the world art treasure house.