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。
5509.21
Yarn; (not sewing thread), single, of synthetic staple fibres, containing 85% or more by weight of polyester, not put up for retail sale
AE 550921
AR 550921
AU 55092100
AU 550921
BR 550921
BR 5509.21.00