Maintenance status, 2021–2026 (unit: days)
| Enterprise Name | Maintenance Period | Maintenance Duration (Days) | Remarks |
|---|---|---|---|
| Maoming Petrochemical | 2021.3.25–5.5 | 40 | |
| Fushun Petrochemical | 2021.4.05–5.19 | 44 | Maintenance originally planned for Apr 10 was moved up to Apr 5. |
| Jilin Petrochemical | 2021.6.4–7.22 | 48 | |
| Shanghai Petrochemical | 2021.4.15–6.20 | 65 | Maintenance of the 400,000 t/y large ethylene unit. |
| Panjin Ethylene | 2021.7.15–9.2 | 48 | |
| Qilu Petrochemical | 2021.8.4–9.23 | 50 | |
| Yangzi Petrochemical | 2021.5.23 | 14 | Yangzi originally planned maintenance in March but postponed it to the second half of the year. The work covers one 400,000 t/y ethylene unit in the old area; only one ethylene unit is shut down. |
| Yanshan Petrochemical | 2021.3.25–5.19 | 54 | |
| Zhenhai Refining & Chemical | 2021.5.18–6.2 | 15 | Zhenhai originally planned maintenance for Apr 6 but postponed it to mid-May. |
| CNOOC Shell (Phase I) | July 13, 1905 | 30 | |
| Xinjiang Tianli | 2021.10.27 | 30 | Since the large ethylene unit had already been shut down early for maintenance, Tianli Co., Ltd. also shut down for maintenance. |
| Sinochem Quanzhou | 2021.12.1–2022.1.20 | 50 | |
| Yangzi Petrochemical | 2022.3.15–5.25 | 70 | Yangzi's No. 2 400,000 t/y ethylene unit was shut down for maintenance on Mar 15 and restarted on May 25. The No. 1 400,000 t/y ethylene unit was shut down on Mar 28 with maintenance planned through May 31. |
| Maoming Petrochemical | 2022.4.30 | - | Restarted on Aug 7. |
| 2022.5.7 | |||
| Shanghai Petrochemical | 2022.6.18–8.20 | - | Shanghai Petrochemical's 300,000 t/y No. 2 ethylene unit was restarted on Aug 20; after stable operation, the 400,000 t/y No. 1 ethylene unit was restarted. |
| Dushanzi Petrochemical | 2022.7.2 | 10 | Dushanzi Petrochemical's large ethylene unit was shut down on Jul 2 due to cold box leakage, requiring about 10 days of emergency repair. |
| Qilu Petrochemical | 2022.7.20–8.2 | 13 | Qilu ethylene maintenance began on Jul 20, and the unit was fully shut down on the 23rd. Maintenance ended and feed was resumed on Aug 2; ethylene tar was produced on Aug 3–4. |
| Hengli Petrochemical | 2022.8.1–8.21 | 20 | |
| Hengli Petrochemical | 2022.9.13–9.22 | 10 | The 1.5 million t/y ethylene cracking unit was shut down on Sep 13; maintenance was expected to last 7–10 days. |
| Gulei Petrochemical | 2022.9.14–10.10 | 25 | The 1 million t/y ethylene unit was briefly shut down for maintenance from Sep 14. |
| Zhejiang Petrochemical Phase II, Unit 2 | 2023.2.15–3.10 | 23 | - |
| Zhenhai Refining & Chemical | 2023.2.26–5.15 | 84 | Restarted on May 15. |
| Liaoyang Petrochemical | 2023.4.7–end May (estimated) | - | - |
| Zhejiang Petrochemical | 2023.5.10–6.30 | 50 days | - |
| Shanghai SECCO | 2023.5.20–7.21 | - | Maintenance ended on Jul 21. |
| Lanzhou Petrochemical | 2023.6.6 | Planned 60 days | |
| Daqing Petrochemical | 2023.6.10–7.20 | 40 | Daqing Petrochemical: Jun 10–Jul 20; Huake: Jun 12–Jul 30. |
| Zhongke Refining & Chemical | 2023.7.13–7.27 | 14 days | Restarted on Jul 27. |
| CNOOC Shell | 2023.7.17–7.27 | 10 days | Restarted on Jul 27. |
| Baolai Petrochemical | 2023.7.31–9.24 | 55 days | Restarted on Sep 24. |
| Yangzi-BASF | 2023.9.5–9.25 | 20 days | Products began to be produced on Sep 25. |
| Sichuan Petrochemical | 2023.9.15–11.15 | 60 days | |
| Shanghai Petrochemical | 2023.9.25– | – | Shanghai Petrochemical small ethylene unit. |
| Zhenhai Refining & Chemical | 2023.10.16–11.2 | 18 days | Restarted on Nov 2. |
| CNOOC Shell (Phase II) | 2023.10.20–12.10 | 50 days | |
| Guangzhou Petrochemical | 2023.10.13–11.8 | 26 days | |
| Maoming Petrochemical | 2023.12.24–3.15 | 82 days | No. 1 cracking unit. |
| Shanghai SECCO | 2023.12.04–12.11 | 7 days | |
| Qilu Petrochemical | 2023.12.23– | ||
| Baolai Petrochemical | 2023.12.27–2024.1.04 | Estimated 10 days | |
| Guangzhou Petrochemical | 2023.12.30–1.13 | 14 days | |
| Sinopec-SK Petrochemical | 2024.1.16–1.26 | Estimated one week | |
| Yangzi-BASF | 2024.1.25–1.30 | ||
| Zhongke Refining & Chemical | 2024.3.19–5.29 | 70 days | |
| Zhejiang Petrochemical | 2024.3.5–3.22 // 4.2–4.30 | The two units are being shut down for maintenance alternately. | |
| Zhongyuan Ethylene | Early Apr 2024–May 15 | Restarted on May 15 | |
| Xinjiang Tianli | 2024.5.15–7.15 | 60 days | |
| Zhejiang Petrochemical | 2024.6.14–25 | 10 days | |
| North Huajin | 2024.7.12–2024.10.08 | About 80 days | |
| Dongming Petrochemical | 2024.7.5–8.4 | 31 days | |
| Jilin Petrochemical | 2024.8.20–10.20 | 60 days | |
| Fujian Refining & Petrochemical | 2024.10.05–12.20 | 60 days | |
| Sinopec-SK Petrochemical | 2024.10.10–2025.1.8 | 90 days | |
| Yangzi-BASF | 2025.4.8–2025.6.3 | 56 days | Restarted on Jun 1; products began on Jun 4. |
| Sinopec SABIC Tianjin | 2025.04.21–2025.6.6 | 46 days | Restarted on Jun 6. |
| Hengli Petrochemical | 2025.05.13–2025.06.10 | 28 days | Restarted on Jun 10. |
| Yanshan Petrochemical | 2025.5.25–TBD | Planned long-term shutdown | |
| Fujian Refining & Petrochemical | 2025.6.5–2025.6.20 | 16 days | |
| Zhejiang Petrochemical | 2025.6.23–2025.8.10 | 48 days | Restarted on Aug 10. |
| Yantai Wanhua Phase II | 2025.5.13–2025.6.25 | 41 days | |
| Dongming Petrochemical | 2025.7.28–2025.9.18 | 52 days | Restarted on Sep 18. |
| Fushun Petrochemical | 2025.8.15–2025.10.28 | 74 days | Restarted on Oct 28. |
| Zhenhai Refining & Chemical | 2025.9.27–2025.11.20 | 54 days | Restarted on Nov 20. |
| Guangzhou Petrochemical | 2025.10.13–2025.12.8 | 56 days | Restarted on Dec 8. |
| Zhongyuan Petrochemical | 2025.10.25–TBD | TBD | |
| Maoming Petrochemical | 2025.11.26–2026.01.10 | 45 days | One unit under maintenance. |
| Shanghai Petrochemical | 2025.11.25–2026.1.25 | 62 days | Restarted on Jan 25. |
| Sinochem Quanzhou | 2025.11.25–2026.1.26 | 64 days | Restarted on Jan 26. |
| Dongming Petrochemical | 2025.12.13–2025.12.24 | 11 days | Restarted on Dec 24. |
| United Petrochemical | 2026.01.08–2026.01.19 | 11 days | Restarted on Jan 19. |
| Gulei Petrochemical | 2026.03.09–7.19 | 132 days | Restarted on Jul 19. |
| CNOOC Shell | 2026.03.06–2026.04.30 | 55 days | Restarted on Apr 30. |
| Yangzi Petrochemical | 2026.05.05–TBD | Planned restart in August. | |
| Sinopec-SK Petrochemical | 2026.06.04–2026.07.15 | 39 days | Restarted on Jul 15. |
| Hainan Refining & Chemical | 2026.06.06–TBD | 3–4 months | Planned shutdown of 3–4 months. |
| Shenghong Refining & Chemical | 2026.07.01–2026.08.17 | 48 days | Restarted on Aug 17. |
| CNOOC Shell | 2026.08.31–TBD | ||
| Source: Chempricehub |
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