Announcement from Petrochemicals: The company's core technical personnel Li Lingyu has applied to resign from her position due to personal reasons and has completed the relevant resignation procedures. After leaving the company, Li Lingyu will no longer hold any position within the company. Any intellectual property rights developed by Li Lingyu during her tenure at the company are considered work-related achievements, and all related ownership belongs to the company. There is no dispute involving the ownership of invention patents related to work-related inventions. As of the date of this announcement, Li Lingyu has completed the handover of work with the company's R&D team, and all R&D projects of the company are proceeding normally. The departure of this core technical personnel will not have a substantial impact on the company's technological research and development, core competitiveness, and sustainability.