| Vendor | Spec | Unit | Price | Currency | Date |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 759.19 | USD | 20250919 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 844.06 | USD | 20250918 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 2152.35 | USD | 20250918 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 1019.91 | USD | 20250918 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 1019.91 | USD | 20250918 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |