Antimony trioxide — the most commercially significant derivative — is widely used as a flame-retardant synergist in plastics, textiles, and electronics, but this heading captures the metal itself and its articles, including waste and scrap, at the primary and semi-fabricated stage. China has historically dominated global antimony production and refining, creating a concentrated supply chain that has drawn attention in US critical-mineral policy discussions. Section 301 tariffs on Chinese-origin goods are a live consideration for importers sourcing antimony metal or articles from China, and buyers should verify applicability at the specific HTS line.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.