... , inks,rubbers,soaps, electronic industrial products,food g glycerol ester of gum rosinDescription:glycerol ester of gum rosin are made from gum ... rosin or refined gum rosin through esterification with glycerol, has good stability and polymer Compatibility, widely used for different ... ).Granule or Flake,intertexture bag:net weight 25kgs each bag. glycerol ester of gum rosin