| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.46 | USD | 20251109 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.46 | USD | 20251107 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.7 | USD | 20251106 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1861.75 | USD | 20251105 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.17 | USD | 20251104 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.64 | USD | 20251103 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.3 | USD | 20251102 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.3 | USD | 20251101 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.3 | USD | 20251031 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.72 | USD | 20251030 |