| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250927 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250927 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250926 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1125.86 | USD | 20250924 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1125.86 | USD | 20250923 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250920 |
| Jinan Xinbo Chemical Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250919 |