Established in 2017, Tramol is a popular stationery products company based in China. They offer pens, notebooks and writing stationery, but it’s in inks that their catalog really broadens. They offer a wide variety of series and ink styles, from pigment inks, to shimmers, and sheening inks, as well. You can easily find them for $2 to $5 USD per bottle on AliExpress or similar shopping sites offering products out of Asia.