| 2901.24 | | Buta-1,3-diene and isoprene: | | | | |
| 2901.24.20 | 00 | Isoprene: | | | | |
| 2902.50.00 | 00 | Styrene | kg | Free | | 15.4￠/kg + 45% |
| 2902.90.20 | 00 | Acenaphthene, chrysene, cymene, dimethylnaphthalenes, fluoranthene, fluorene, indene, mesitylene, methylanthracene, methylnaphthalene, phenanthrene and pyrene | kg | Free | | Free |
| 2934.99.05 | 00 | 5-Amino-3-phenyl-1,2,4-thiadiazole (3-Phenyl-5-amino-1,2,4-thiadiazole); 2-Hydroxybenzoxazole (Benzoxazolone); 4-Phenylmorpholine; 1,9-Thianthrenedicarboxylic acid; and Thioxanthene-9-one (Thioxanthone) | kg | 5.8% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 15.4￠/kg + 39.5% |
| 3903 | | Polymers of styrene, in primary forms: | | | | |
| 3903.11.00 | 00 | Polystyrene: | | | | |
| 3903.20.00 | 00 | Styrene-acrylonitrile (SAN) copolymers | kg | 6.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 15.4￠/kg + 45.5% |
| 3903.30.00 | 00 | Acrylonitrile-butadiene-styrene (ABS) copolymers | kg | 6.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 15.4￠/kg + 47% |
| 3903.90.10 | 00 | Methyl methacrylate-butadiene-styrene (MBS) copolymers | kg | 6.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 15.4￠/kg + 67.5% |
| 3915.20.00 | 00 | Of polymers of styrene | kg | Free | | 10% |
| 3920.30.00 | 00 | Of polymers of styrene | kg | 5.8% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 35% |
| 3921.11.00 | 00 | Of polymers of styrene | kg | 5.3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 80% |
| 4002.11.00 | 00 | Styrene-butadiene rubber (SBR); carboxylated styrene-butadiene rubber (XSBR): | | | | |
| 4002.19.00 | 10 | Containing 50 percent or less styrene by weight of the dry polymer | kg | | | |
| 4002.19.00 | 20 | Containing over 50 percent styrene by weight of the dry polymer | kg | | | |
| 4002.31.00 | 00 | Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): | | | | |
| 4002.31.00 | 00 | Isobutene-isoprene (butyl) rubber (IIR) | kg | Free | | 20% |
| 4002.41.00 | 00 | Chloroprene (chlorobutadiene) rubber (CR): | | | | |
| 4002.60.00 | 00 | Isoprene rubber (IR) | kg | Free | | 20% |
