| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.71 | USD | 20251209 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.71 | USD | 20251209 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.87 | USD | 20251203 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.87 | USD | 20251203 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.52 | USD | 20251202 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.52 | USD | 20251202 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.83 | USD | 20251201 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.83 | USD | 20251201 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.5 | USD | 20251126 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 621.5 | USD | 20251126 |