Polymers of vinyl chloride or of other halogenated olefins, in primary forms

390410 Vinyl chloride, other halogenated olefin polymers; poly(vinyl chloride), not mixed with any other substances, in primary forms 390421 Vinyl chloride, other halogenated olefin polymers; non-plasticised poly(vinyl chloride), in primary forms, mixed with other substances 390422 Vinyl chloride, other halogenated olefin polymers; plasticised poly(vinyl chloride), in primary forms, mixed with other substances 390430 Vinyl chloride, other halogenated olefin polymers; vinyl chloride-vinyl acetate copolymers, in primary forms 390440 Vinyl chloride, other halogenated olefin polymers; vinyl chloride copolymers, in primary forms n.e.c. in heading no. 3904 390450 Vinyl chloride, other halogenated olefin polymers; vinylidene chloride polymers, in primary forms 390461 Halogenated olefin polymers; fluoro-polymers, polytetrafluoroethylene, in primary forms 390469 Halogenated olefin polymers; fluoro-polymers (other than polytetrafluoroethylene), in primary forms 390490 Vinyl chloride, other halogenated olefin polymers; n.e.c. in heading no. 3904