177.2450 聚酰胺/亚胺树脂(Polyamide-imide resins),聚酰胺,亚胺,树脂,polyamide,imide,resins,,国际法规,美国...
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...乙烯基甲苯共聚物树脂(α-Methylstyrene-vinyltoluene resins, hydrogenated) 177.2450 聚酰胺/亚胺树脂(Polyamide-imide resins) 177.2470 聚氧亚甲基共聚物(Polyoxymethylene copolymer) ..
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