Yantai Huarun Nylon Co., Ltd. TMT Fork Maintenance Service Public Inquiry and Comparison Change Announcement from June 2025 to May 2026 Change Announcement No.: HXCLBGG202505190003 Our company issued the TMT Fork Maintenance Service Public Inquiry and Comparison Announcement from June 2025 to May 2026 on May 15, 2025 (Project No.: HXLCGXY202505150007), and now makes the following changes: The deadline for quotation before and after the type change is 08:00:00 on May 19, 2025, 14:00:00 on May 19, 2025, and the deadline for clarification before the bid is 08:00:00 on May 19, 2025, and 14:00 on May 19, 2025. Except for the aforementioned changes, the remaining content of the original announcement remains valid. Yantai Huarun Nylon Co., Ltd. May 19, 2025