| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.51 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.57 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1129.54 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.37 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.43 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.31 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.43 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.31 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.37 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.43 | USD | 20251114 |