On 21 May, 2013, China’s Ministry of Environmental Protection released a document——Notice Regarding the Environmental Protection Inspection against Glyphosate (PMIDA) Manufacturers (hereinafter the Document in short), which brings great impact on China’s stock market of glyphosate. Some glyphosate companies' stock prices have increased apparently after the release of the Document, including Zhejiang Wynca, Nantong Jiangshan and Jiangsu Yangnong. However, the supply of China’s glyphosate is still stable at present and the ex-works price of glyphosate technical decreased slightly in mid-June 2013.

