Profile: Shijiazhuang Guangwei Chemicals Imp.&Exp. Co., Ltd . manufactures and exports chemical raw materials. We produce basic inorganic and organic chemicals and dyestuffs that are used in the paint & coating, rubber, feed, fertilizer & water treatment Industry. Our products include chromium trioxide, carbon black, chlorinated paraffin, lithopone, titanium pigment, iron oxide red, oxalic acid, pentaerythritol, zinc sulphate and zinc oxide. Formic acid is a kind of basic material in organic chemicals. It is widely used in pesticides, leather, medicine, rubber, printing and dyeing industry & chemical. Sodium hexametaphosphate is mainly used as a water softening agent in solution for printing, dyeing and boiler. For food grade, it is mainly used as additive agent, PH adjusting and fermentation agent & nourishment.