Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 07 Polyacetals,polyethers and epoxide resins;polycarbonates... polyester, in primary forms 39 07 61 Having a viscosity number of 78 ml/g or higher Commodity Code Description 39 07 61 00 Having a viscosity number of 78 ml/g or higher