Cathay Biotech Inc. (688065.SH) stated on the interactive platform on September 18 that after nearly a decade of research and development, the company has used synthetic biology technology to solve the technical bottlenecks in the production process of pentamethylene diamine from multiple perspectives and has registered new substances with the Ministry of Ecology and Environment. Based on the pilot production of thousand-ton level pentamethylene diamine at the Shandong production base, the company's Wusu base has successfully launched a 0.05 million-ton/year bio-based pentamethylene diamine production line in 2021, marking the first industrialization of pentamethylene diamine products.