| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.97 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.23 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 332.02 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 346.15 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.34 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.28 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.28 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.47 | USD | 20251127 |