However, water-based ink also volatilizes quite quickly, especially in summer. There are some "pungent" smells. Writing and painting will melt the handwriting as soon as it meets water. Stationery stores have 12 water-based pigments for primary school students, 20 sticks and 24 boxes of various colors. Mostly used for dripping in nylon pens.

Oily, the stamp pad on the accounting desk, printing oil, that is. There are markers in markets and stationery stores, which are used to write on glass and plastic sheets. There are thick ones and thin ones. For example, on a wedding notebook (the notebook is dyed in red ink), you can't write with a water-based pen, you can only write your name and money with an oil-based pen. Oily volatilization is faster! ! The fragrance is bigger. I mainly use it to burn CDs. Cover the pen cap tightly as soon as you finish writing. This oily ink can't be washed off with water, and it can't be removed much with alcohol, so we have to use phenol thinner and cotton balls to wipe it without leaving any traces. There are all these rare local products, two or three yuan a big bottle. )