| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.48 | USD | 20251117 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251116 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.95 | USD | 20251116 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.95 | USD | 20251115 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251115 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.95 | USD | 20251114 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251114 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.79 | USD | 20251113 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.35 | USD | 20251113 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.83 | USD | 20251112 |