Inks should be of the same brand and color, and cannot be mixed. Otherwise, it will cause chemical reactions and precipitation, which is not conducive to writing. After each writing, the pen cap should be put on in time. Otherwise, the ink on the pen tip will dry out and the water will not flow smoothly when writing again. If you want to use another ink, you should clean and dry the pen before filling it with new one. ink.

Ranking of the best pen and ink brands

1. HERO (China Famous Trademark, Chinese Famous Brand, Shanghai Hero Group Co., Ltd.)

2. Ostrich (China's well-known trademark, China's time-honored brand, the birthplace of China's first drop of ink)

3. Parker Quink (1888 United States, global leader in writing instruments, top five pen and ink brands)

4. Waterman (1883 New York, large stationery and pen manufacturer, top five pen and ink brands)

5. Boss (well-known brand in China’s stationery industry, Guiyang Doctor Chemical Company )