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。
8404.90
Boilers; parts of auxiliary plant, for use with boilers of heading no. 8402 and 8403 and parts of condensers for steam or other vapour power units
AE 840490
AR 840490
AU 840490
BR 840490
BR 840490
CA 840490