There are so many kinds of gel ink pen in the stationery market.The consumers how to choose the suitable gel pen ?There are some points in selection as followes:
The tip diameter: Asians like 0.5mm or smaller diameter of pen tip.European.
The material of tip: Tungsten carbide and stainless steel,ceramic.And the best tip is tungsten carbide.
The material of pen:nickel copper,stainless steel and brass.And the best one is stainless steel.
2.The ink
As there is not mature in the gel ink pen.There should be easy to find the problems if there are the problems in the storage,processing and transportation.So it must be more careful.You can try to write the number "8" on paper.It can text the degree of smooth.
3.Tail oil
It is refined from the petroleum refining. It is transparent and with less impurtity.And it is better than the yellow tail oil.
4.Tubing
The diameter of the tubing size is related to volume.The more straight shapre the more smooth in use.
5.Rubber ball
The plastic rubber ball is important.It can avoid the leak ink and dry ink.To check if it can really ensure the sealing depth.
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