... with glycerol Glycerol ester of gum rosin are made from gum rosin or refined gum rosin through esterification with glycerol, Used in ... Grade Ester Gum 6,000MT, Hydrogenated Rosin 10,000MT, and various kinds of Rosin Esters and modified rosin products 32,000 MT.Total annual ... ,500MT of Gum Turpentine and 10,000MT of Rosin Esters. ( function(){ var aBigImageSrc = [ 'http://i00.i.aliimg.com/photo/v2 ...