| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.15 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.1 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.98 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.28 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.34 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.1 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.34 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.98 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.28 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.89 | USD | 20251113 |