Of condensation or rearrangement polymerisation products, whether or not chemically modified
Plates, sheets, film, foil and strip, of noncellular condensation polymerization products and rearrangement polymerization products, n.e.s., not reinforced, laminated, supported or similarly combined with other materials, not worked or only surfaceworked, or only cut to rectangular, incl. square, shapes (excl. selfadhesive products, floor, wall and ceiling coverings in heading 3918 and polyimide sheet and strip, uncoated, or coated or covered solely with plastic)
Polyimide sheet and strip, noncellular, uncoated, or coated or covered solely with plastic, not reinforced, laminated, supported or similarly combined with other materials, not worked or only surfaceworked, or only cut to rectangular, incl. square, shapes (excl. selfadhesive products, and floor, wall and ceiling coverings in heading 3918)