| 3904 | | Polymers of vinyl chloride or of other halogenated olefins, in primary forms: | | | | |
| 4002.31.00 | 00 | Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): | | | | |
| 8539.21 | | Tungsten halogen: | | | | |
| 9018.19.95 | 35 | Electroencephalographs (EEG) and electromyographs (EMG) | No. | | | |
