| HS Codes | Unit Code | Unit | Descriptions in Chinese | Descriptions in English |
|---|---|---|---|---|
| 39031100 | 9 | 千克 | 初级形状的可发性聚苯乙烯 | Expansible polystyrene, in primary forms |
| 39031910 | 9 | 千克 | 改性的初级形状的聚苯乙烯 | Modified polystyrene (excl.expansible), in primary forms |
| 39031990 | 9 | 千克 | 其他初级形状的聚苯乙烯 | Other polystyrene (excl.expansible), in primary forms |
| 39032000 | 9 | 千克 | 初级形状的苯乙烯-丙烯腈（SAN）共聚物 | Styrene-acrylonitrile (SAN) copolymers, in primary forms |
| 39033010 | 9 | 千克 | 改性初级形状的丙烯腈-丁二烯-苯乙烯（ABS）共聚物 | Modified acrylonitrile-butadiene-styrene(ABS) copolymers,in primary form |
| 39033090 | 9 | 千克 | 其他初级形状的丙烯腈-丁二烯-苯乙烯（ABS）共聚物 | Other acrylonitrile-butadiene-styrene(ABS) copolymers,in primary form |
| 39039000 | 9 | 千克 | 其他初级形状的苯乙烯聚合物 | Polymers of styrene, in primary forms, nes |
