| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.88 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.11 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.98 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.71 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.03 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.82 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.82 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.98 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.03 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |