北交所策略专题报告：聚氨酯行业景气回暖，关注北交所一诺威

Group 1 - The polyurethane industry is experiencing a recovery, with recent price increases observed in TDI compared to June 1, 2025, and the beginning of 2025. This is attributed to supply constraints in the overseas market due to an incident at Covestro's TDI facility in Germany and ongoing reductions in overseas TDI production capacity influenced by energy costs and environmental policies [1][10]. - The industry is expected to benefit from the optimization of supply and demand dynamics, leading to an upward trend in the polyurethane industry's prosperity [1][10]. - The report suggests focusing on Yinuowei, a company engaged in the production and sales of polyurethane raw materials and other downstream derivative products [1][15]. Group 2 - The chemical new materials sector on the North Exchange saw a weekly increase of 1.65%, with notable performances from the rubber and plastic products industry and non-metallic materials, which rose by 5.27% and 5.26% respectively [2][24]. - Individual stocks that performed well in the chemical new materials sector included Gebijia (+48.22%), Huami New Materials (+28.25%), and Litong Technology (+21.59%) [2][26]. - The North Exchange 50 index closed at 1476.33 points, reflecting a weekly increase of 2.40% [2][19]. Group 3 - Yingtai Bio reported significant growth in its performance for the first half of 2025, achieving revenue of 2.966 billion yuan, up from 2.879 billion yuan in the same period last year, and a net profit of 15.29 million yuan compared to a loss of 79.38 million yuan in the previous year [3][52]. - In contrast, Dier Chemical experienced a decline in performance, with revenue of 302.47 million yuan, down 26.59% year-on-year, and a net profit of 26.90 million yuan, down 46.67% [3][52].