... > SECTION VII - PLASTICS AND ARTICLES THEREOF; RUBBER AND ARTICLES THEREOF > CHAPTER 39 - PLASTICS AND ARTICLES THEREOF > I. PRIMARY FORMS > 3907 Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms > Other polyesters > Unsaturated