There are many kinds of Gou Xianbi, including water-borne, oily and needle-shaped. General brands include Sakura, sta, Paitong or Baoke.
Most of the water-soluble colored lead are Marley and Liberty, and there seems to be Faber-Carlton, all from Germany (I don't know if they are the same brand). Water-soluble colored lead dipped in water can achieve the effect of watercolor.
Sometimes, in order to get more outstanding visual effects, water-soluble colored lead is changed into marker pen, but marker pen cannot be modified, so most hand-drawn drafts of fashion design use colored lead.