| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 831.58 | USD | 20251018 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 754.06 | USD | 20251017 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 690.64 | USD | 20251017 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 794.94 | USD | 20251017 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 690.45 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 760.91 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 796.13 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 732.72 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 690.19 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 732.45 | USD | 20251015 |