| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.8 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.04 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.04 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.98 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.8 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.98 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.22 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.04 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.1 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.92 | USD | 20251114 |