| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1246.72 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1246.35 | USD | 20251124 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1129.19 | USD | 20251124 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1129.19 | USD | 20251124 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1270.34 | USD | 20251124 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1157.42 | USD | 20251124 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1128.75 | USD | 20251121 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1269.84 | USD | 20251121 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1128.75 | USD | 20251121 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1156.97 | USD | 20251121 |