| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1129.42 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.18 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1114.78 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.67 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1114.78 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1128.89 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.72 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1114.94 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.88 | USD | 20251110 |