| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.83 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.3 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.79 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1304.64 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.29 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.51 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1304.93 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.77 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.26 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.02 | USD | 20251101 |