... varnish, various adhesives, glue, soap, synthetic resins.Features:1) China original gum rosin WW grade2) Natural organic compound, mainly ... ink, resin acid is changed into disproportionate rosin, polymerized rosin, hydrogenated rosin, for further use by its double bond ... paints and varnish, various adhesives, glue, soap, synthetic resins, chewing gum and other chemical industries WW Grade Gum ...