| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.5 | USD | 20251130 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.5 | USD | 20251129 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 706.32 | USD | 20251129 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 833.46 | USD | 20251129 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 734.58 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 678.07 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 734.58 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.5 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 833.46 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 706.32 | USD | 20251128 |