quote from:   https://www.mobaobuy.com/information

At present, the lysine market is relatively calm, and the market is mainly wait-and-see; Threonine, methionine supply is tight, the trade market price is strong. 

According to market news: In order to promote the rapid development of the amino acid industry and cooperate with aquaculture enterprises to reduce costs and increase efficiency, Heilongjiang Jinxiang Biochemical Co., Ltd. plans to expand the production of tryptophan by 20,000 tons in 2024. 

On September 18, 2023, the latest quotation of amino acids of Ningxia Eppen Biotech Co., LTD. : 98% lysine 11 yuan /kg, 70% lysine 6.5 yuan /kg, threonine 12.1 yuan /kg, valine 23 yuan /kg.