| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2195.48 | USD | 20250930 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1856.83 | USD | 20250929 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2194.43 | USD | 20250929 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250928 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2248.71 | USD | 20250928 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1855.18 | USD | 20250928 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1855.18 | USD | 20250927 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250927 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250926 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2248.71 | USD | 20250926 |