| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1129.26 | USD | 20251029 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1171.6 | USD | 20251029 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1093.97 | USD | 20251029 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1188.54 | USD | 20251029 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1122.2 | USD | 20251029 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1171.39 | USD | 20251028 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251028 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251028 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1121.99 | USD | 20251028 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1188.33 | USD | 20251028 |