| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.48 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.57 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.63 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.37 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.24 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.62 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.68 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.29 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.5 | USD | 20251205 |