| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 931.15 | USD | 20251101 |
| Shandong Qiangsen Chem | China national standards | MT | 931.15 | USD | 20251101 |
| Shandong Qiangsen Chem | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Qiangsen Chem | China national standards | MT | 931.15 | USD | 20251031 |
| Shandong Qiangsen Chem | China national standards | MT | 931.36 | USD | 20251030 |
| Shandong Qiangsen Chem | China national standards | MT | 931.36 | USD | 20251030 |
| Shandong Qiangsen Chem | China national standards | MT | 931.64 | USD | 20251029 |
| Shandong Qiangsen Chem | China national standards | MT | 931.64 | USD | 20251029 |
| Shandong Qiangsen Chem | China national standards | MT | 931.47 | USD | 20251028 |
| Shandong Qiangsen Chem | China national standards | MT | 931.47 | USD | 20251028 |