| Vendor | Spec | Unit | Price | Currency | Date |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 903.5 | USD | 20251107 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 903.13 | USD | 20251106 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 916.77 | USD | 20251105 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 916.98 | USD | 20251104 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 917.21 | USD | 20251103 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 917.25 | USD | 20251030 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 931.64 | USD | 20251029 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 931.14 | USD | 20251027 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 930.52 | USD | 20251024 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 930.65 | USD | 20251023 |