| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 706.06 | USD | 20251117 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 734.3 | USD | 20251117 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 713.03 | USD | 20251116 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 713.03 | USD | 20251115 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 833.04 | USD | 20251115 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 753.97 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 713.03 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 720.08 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 734.2 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 760.6 | USD | 20251113 |