Yellow Solid Gum Rosin for Industrial, Industry

Yellow solid gum rosin, also known as colophony or Greek pitch, is a natural, semi-transparent, brittle form of resin obtained from the sap (oleo-resin) of pine trees. IYellow solid gum rosin, also known as colophony or Greek pitch, is a natural, semi-transparent, brittle form of resin obtained from the sap (oleo-resin) of pine trees.