Profile: Shijiazhuang Changjia Chemical Factory is engaged in the production of fine chemical products. We offer refined sulfanilic acid, rough sulfanilic acid and sodium sulphanilate. Our rough sulfanilic acid is a white to off white powder that is soluble in boiling water. It is an important intermediate used to produce dyestuffs, and printing & dyeing auxiliaries. Our sodium sulphanilate is a pink/rose flashing and flaky crystal that is easily soluble in water.