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美国进口关税
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四氢呋喃
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Heterocyclic compounds with oxygen hetero-atom(s) only: · Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: · Tetrahydrofuran
2-呋喃甲醛（糠醛）
Heterocyclic compounds with oxygen hetero-atom(s) only: · Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: · 2-Furaldehyde (Furfuraldehyde)
糠醇和四氢糠醇
Heterocyclic compounds with oxygen hetero-atom(s) only: · Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: · Furfuryl alcohol and tetrahydrofurfuryl alcohol
三氯蔗糖
Heterocyclic compounds with oxygen hetero-atom(s) only: · Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: · Sucralose
Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: — 其他：
Heterocyclic compounds with oxygen hetero-atom(s) only: · Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: · Other:
内酯：
Heterocyclic compounds with oxygen hetero-atom(s) only: · Lactones:
异 safrole
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · Isosafrole
1-(1,3-苯并二氧戊环-5-基)丙-2-酮
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · 1-(1,3-Benzodioxol-5-yl)propan-2-one
胡椒醛（洋茉莉醛）
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · Piperonal (heliotropin)
黄樟素
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · Safrole
四氢大麻酚（所有异构体）
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · Tetrahydrocannabinols (all isomers)
克百威（ISO）
Heterocyclic compounds with oxygen hetero-atom(s) only: · Other: · Carbofuran (ISO)
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