| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.51 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 332.24 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 346.37 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.51 | USD | 20251204 |