September trading was shaped by the approach of China’s National Day holiday, with reports describing thin vitamin-market activity and need-based restocking rather than broad purchasing. Major vitamin D3 producers raised quotations, while choline chloride held firm. The pattern was product-specific, not a uniform rise across the vitamin sector.
Amino-acid indications were mixed but firmer in some segments. Reports noted modestly higher offers for 98.5% L-lysine HCl and methionine, while valine remained weakly stable. U.S. antidumping and countervailing-duty orders on L-lysine from China took effect on September 16, adding a formal trade measure to the month’s market developments.
A September 30 assessment from the Institute for Feed Education and Research (IFEEDER) highlighted the industry’s international supply concentration: it reported that China supplies 78% of U.S. vitamin imports and accounts for 62% of global amino-acid production used in feed and pet food. Most month-specific price commentary focused on feed-grade products; the reports did not establish a comparable trend for food-grade prices.
