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Statistical classifications
NC 2018 (ca)
Subitem
281122 — Diòxid de silici
Descendants
Code
Description
28112200
Diòxid de silici
Correspondence with
NC 2017 (ca)
Code
Description
281122
Diòxid de silici
Correspondence with
NC 2019 (ca)
Code
Description
281122
Diòxid de silici