比较 HS 编码
输入最多 5 个 HS-6 编码（逗号分隔），并排比较说明与各国对应编码。
2918.21
Acids; carboxylic acids, (with phenol function but without other oxygen function), salicylic acid and its salts
US 291821
US 2918.21.10.00
AE 291821
AR 291821
AU 29182100
AU 291821