1. MARCO: Marco is a famous stationery brand from Italy. Its watercolor pens are loved by consumers for their bright colors, easy coloring and easy cleaning. Marco's watercolor pens use environmentally friendly and non-toxic pigments, which are harmless to the human body and suitable for children.

2. STAEDTLER: Staedtler is an old stationery brand in Germany. Its watercolor pens are famous for their high quality, rich colors, and easy cleaning. Staedtler's watercolor pens use a special ink formula to make the colors more vivid and less likely to fade.

3. Pilot: Pilot is a well-known stationery brand in Japan. Its watercolor pens are loved by consumers for their rich colors, easy coloring, and easy cleaning. Baile's watercolor pens use a special ink formula to make the colors more vivid and not easy to fade.

4. Zebra: Zebra is a well-known stationery brand in Japan. Its watercolor pens are loved by consumers for their rich colors, easy coloring, and easy cleaning. Zebra's watercolor pens use a special ink formula to make the colors more vivid and not easy to fade.

5. Pentel: Pentel is a well-known stationery brand in Japan. Its watercolor pens are loved by consumers for their rich colors, easy coloring, and easy cleaning. Penton's watercolor pens use a special ink formula to make the colors more vivid and not easy to fade.

The above brands of watercolor pens all have good reputations. You can choose according to your needs and budget.