| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.5 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.77 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.58 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.85 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.79 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.74 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.47 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.67 | USD | 20251203 |