| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.99 | USD | 20251127 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.64 | USD | 20251127 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.38 | USD | 20251126 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.76 | USD | 20251126 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.93 | USD | 20251125 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.34 | USD | 20251125 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.04 | USD | 20251124 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.62 | USD | 20251124 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.2 | USD | 20251123 |