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。
4009.21
Rubber; vulcanised (other than hard rubber), tubing, piping and hoses, reinforced or otherwise combined only with metal, without fittings
AE 400921
AR 400921
AU 40092110
AU 400921
BR 400921
BR 400921