2830Heading
2830 — Sulphides; polysulphides, whether or not chemically defined
Sulphua; polysulphua, đã hoặc chưa xác định về mặt hóa học
Codes under heading 2830
Distinguish from heading:2617Other…2530Miner…2813Sulph…2607Lead…2811Other…2608Zinc…2502Unroa…2511Natur…
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