美瑞新材：河南子公司生产销售的特种胺产品中已涵盖芳香胺类产品

Group 1 - The company Meirui New Materials (300848) confirmed that its subsidiary in Henan produces and sells specialty amine products, which include aromatic amines such as PNA (p-nitroaniline) and PPDA (p-phenylenediamine) [1]