large capacity automatic ink supply drawing pen black red blue warehouse logistics office express liquid storage drawing number marking pen

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The supply of the tail is full of ink, the ink can be seen through, and you can see how much is left. It automatically adds ink. This is an oil-based ink that is not easy to wipe off! A box contains 10 pens, and a piece contains 1200 pens. Please order in multiples of 10! No breaking the box!

Green Perfume's new large-capacity patent series products, automatic ink supply oil-based ink marker, wear-resistant tip, and a large amount of oil-based ink stored at the end.

Automatic ink supply marker in the writing process at the end of the large amount of ink will automatically balance the supply and demand to the tip. Until the end of the ink in the tail is used up. Large capacity. Increases writing time.

A full-automatic ink supply large capacity marker with a liquid ink storage cartridge at the end, where the ink is clearly visible. The cap has a cutting edge to open the sealing tape.