| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1270.04 | USD | 20251030 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1128.92 | USD | 20251030 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1129.26 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1246.42 | USD | 20251029 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1129.26 | USD | 20251029 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1270.41 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1246.19 | USD | 20251028 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1270.18 | USD | 20251028 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251028 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251028 |