ARTEX water-based ball pen refill 4 into the discount group (German Schmidt SCHMIDT brand) black

**ARTEX water-based ball pen refill 4 into the discount group (German Schmidt SCHMIDT brand)** ■Full color and even ink ■The thickness of the refill is about 0.5 ■Writing length is 1500M +-20% ■Choose the famous German refill brand SCHMIDT ■Refills of international standard specifications, easy to replace **Another single purchase 1 into the store ►** https://www.pinkoi.com/product/Yy7fBmfD [Refill Small Classroom Q &A｜After reading it, understand the difference of refills in seconds] Let’s talk about the most commonly seen ballpoint pens, gel pens and ballpoint pens on the market All the differences lie in the composition of the ink: oily, neutral, and water-based. 3 different ink compositions create different writing characteristics The ink composition and the name of the pen can be compared with the following categories: **Ballpoint Pen------ Oily or Neutral** **Gel pen ------ neutral** **Ballpoint pen ------ water-based or neutral** At this time, you must have found a problem: **So is "neutral" ink a ballpoint pen or a ballpoint pen?** …good question! Do not go around so many circles and esoteric proper nouns, in short, because neutral ink has the characteristics of oily and water-based inks in one, so you want to say that it is a neutral ball pen or a neutral ballpoint pen? There are people who call both of them, and if it's more "professional", just call him a gel pen! In the same way, the "medium oily" ink we are launching now is precisely because it combines the characteristics of neutral and oily inks, so let me name it "medium oily ballpoint pen"! Or, you can directly say that he is a "medium oil pen", you can! **■3 kinds of ink composition feature description:** https://live.staticflickr.com/65535/52063201128_1870b284ff_o.jpg ■ The viscosity will affect the absorbency of the paper and the writing feel when writing, and the mass market now prefers neutral, Water-based ink with low viscosity (but it does not mean that oily refills are not good, and the feeling really varies from person to person). ■ Writing length refers to the length that a pen can write. Simply put, the longer the length, the more it can be written.