证券时报·2025-07-02 09:15Core Viewpoint - The article highlights the significant market movements in the steel and photovoltaic sectors, driven by news of production cuts and environmental regulations in Tangshan, as well as collective production reductions in the photovoltaic glass industry [1][7][13]. Steel Sector - The steel sector experienced a substantial surge, with stocks like Shengde Xintai rising by 17% and several others reaching their daily limit [4][5]. - The market is reacting to reports of increased environmental production cuts in Tangshan, with approximately half of the steel mills indicating they received notifications regarding these measures [7]. - If the production cut policies are strictly enforced, the capacity utilization rate could drop from 83% to 70%, leading to a daily reduction of 30,000 tons in sintering ore production [7]. - The China Iron and Steel Association is set to hold a meeting to discuss the industry's progress and challenges, indicating a focus on future strategies [7]. Marine Economy - The marine economy sector saw strong performance, with stocks like Kelaite and Deepwater Haina hitting their daily limits [9][10]. - A recent meeting emphasized the importance of high-quality development in the marine economy, focusing on innovation, policy support, and the involvement of social capital [11]. - The deep-sea technology industry is identified as a key area for growth, with increasing demand for deep-sea materials and equipment [12]. Photovoltaic Sector - The photovoltaic industry saw a notable rise, with stocks like Xiuchang and Daye Intelligent reaching their daily limits [14][15]. - Reports indicate that leading photovoltaic glass companies plan to collectively reduce production by 30%, which is expected to support sustainable industry development [16]. - The industry is currently facing pressure with prices falling below cash cost lines, prompting a need for supply-side reforms [16].