According to the official website of Chen Guang Stationery, the difference between paint pen and oily marker pen is as follows.

1, using different methods, the paint pen should be shaken first to make the ink mix evenly, and then the nib should be lightly pressed on the paper. You can write directly by opening an oily marker.

2, the ink effect is different, because the ink is relatively thick, and the paint pen has a good covering effect. Generally, the words written with a paint pen will have a three-dimensional convex feeling, and the effect of signature is still very good. Oil marker ink is thinner, which can be made thinner and brighter.